Database Develop

Monitor to Xbox 360 audio

Okay so I'm planning on buying a new monitor. the ASUS MS238H and it has a 3.5mm hole that says "For HDMI" and a HDMI port. I was planning on hooking my xbox 360 up to it, and I want audio for it and my PC so I was thinking could I plug a 3.5mm cable from my speakers AUX port to the monitor and have it work, or do I need to split the audio coming from the speakers main cable for it to be able to work with my PC and XBOX360. Please anything will help.

Verify the specifications on both devices ... I seem to recall reading somewhere that audio can be transferred over the HDMI cable. I suggest doing a quick Google search on:
hdmi audio xbox360
HTH,

the hdmi cable should have audio built in.
Is it a hdmi to hdmi video + 3.5mm audio?
i dont think they do them put id try searching for hdmi to hdmi video + phono (l r) audio and get a converter
flyboy

well the monitor doesn't have built in speakers that's the problem. The monitor has a plug that says "for hdmi" and it's a 3.5mm plug, and I have speakers with a AUX plug and I plan on plugging in my 3.5mm cable to the monitor through that. So I was wondering if it works.

Have a look at the the following XBOX360 accessory:
http://www.xbox.com/en-US/hardware/x/xbox360hdmiavcable
The Xbox 360 HDMI Cable provides gamers with separate audio and video connections via the included Audio Adapter. The Audio Adapter allows HDMI video to be routed to the HDTV with the audio routed separately to the home speaker system. Without the Audio Adapter the video and audio signals are both carried by the HDMI cable. This means users without an HDMI receiver (new/costly) must listen to their Xbox 360 game and movie audio via their TV speakers.
One wire for both digital audio and video
Experience high definition movies and games at up to 1080p resolution
Dolby Digital 5.1 Surround Sound output
Optical/RCA Audio Adapter included for non-HDMI supported stereo systems
2 meter (6.5 feet) shielded cable
Click to expand...
Click to collapse

So the monitor has the hdmi in then a 3.5mm socket out for audio?
flyboy

In the midst of downloading the manual for the display ... I suspect the 3.5mm jack is audio out for mini-speakers.
* EDIT *
Well ... the manual is a Quick Start fold-out which doesn't provide much more info than what is posted on their site. The fold-out indicates that the ports on the back are 1) DC-IN, 2) HDMI-IN/DVI, 3) VGA, 4) Earphone - Out. Based on the limited info presented, I suspect that the audio/video is carried through the HDMI cable and port #4 could be used for a headset or mini-speakers.
Best thing would be to call ASUS up for confirmation before making the purchase.

I have a similar setup running on my screen and a set of speakers and a ps3. The way i did it was to send the video over HDMI and then the audio over a RCA connection. This meant that i can have clear audio.
If you do it over HDMI then Headphones, you meet the asus monitor amp (wont be great) i personally would suggest buying the adaptor that outputs RCA and digital optical, that plugs into the old standard component port on the back. Will be much easier and also you will not have audio levels controlled in 2 places.
I wanted to do it similar to you but i wanted a proper aux out to my speakers, no such monitor in my price range exisits at least or really needs it tbh.

Yeah thanks for all your help. I decided to buy a different ASUS monitor with built in speakers. Didn't want to go through the hassle of setting everything up.

HDMI out sound problem

Hi
I am trying to use my LG P990 as a car pc.
Now the screen in my car is 7" and only has a vga input.
Audio is played on my car's stereo system using rca or line in cables.
I bought a converter for this case HDMI-VGA from König:
Connectors: 1x input HDMI female
1x output VGA + 2xRCA female
• Supports HDMI resolution: 480i, 480p, 576i, 576p, 720p, 1080i en 1080p
• Supports Analogue Video output up to UXGA and 1080p with 10-bit DAC
• High performance up to 1.65 GBps/165 MHz
• HDCP 1.2 support
• LED indication power.
• Built-in equalizer.
• Power: 5V
Once I use this converter the HDMI mirroring from the LG P990 works on my 7" car screen no problem.
But the audio is only played on my phone and is not passet through by the rca cables to my car audio system.
I checked if there are any options of changing the audio output but couldn't find any.
Normaly when I use the mirco HDMI to a tv it play's video and audio through the HDMI cable on the screen.
But now it only play's on the phone it's speaker.
I can still get the audio to work on my car's speakers by using the headphone 3.5 line out.
But this means an extra cable coming from my phone wich I rather loose.
I tried other devices with this converter but only my PS3 will send sound through the RCA to the TV, however no video.
I contacted König with my problem and will post what they tell me.
But I think the problem is with my LG P990 audio out.
Any idea's?

I think the problem is simply your phone not recognizing your setup. Your best bet might be using the minijack connection, might be an extra cable but saves you the hassle.
Also this is the wrong section, should be in Q & A.

sorry for wrong section, I don't think I can change that now.
Is there any way of force audio output?
Or selection different options?

Well it's clear what is causing your problem, but I don't think you'll be able to fix it. As you proved with experimenting, HDMI devices are having problems with recognizing what they are connected to. Maybe you've got a bad unit, maybe it's a general problem with design. Use warranty to get new one, if that doesn't work try to get your money back and buy something else. Can't recommend anything, sorry.
But, interesting project! Not so long ago I was thinking about going that CarPC way too and now it's easier than ever . You will not have touch input on 7" LCD but anyway...

Chromecast Audio Problem!

How to stream Video only to chromecast not the audio!
I have a laptop connected to the audio system!
now i got chromecast on my projector (have no audio output)
i stream video from my laptop to my projector work fine but i have problem the sound! when i stream any video to chromecast on my computer have to sound of the video im playing!
is there the way to by pass this? stream video but also on pc still play audio of that video?

When you use a native Chromecast app for casting, it "hands off" the request to the Chromecast and the Chromecast itself goes and retrieves the data. Essentially the Chromecast itself plays the content, so the audio and video come out of it.
If you cast a tab or the entire desktop from a PC and don't enable the audio, it should play audio from the PC, but the audio and video probably be out of sync.
Otherwise you will have to "break out" the audio from the HDMI stream with an HDMI audio extractor (make sure it is HDCP compliant) or other converter, or route the Chromecast through a HDMI A/V receiver so it can play the audio.

I apologize. I was incorrect. When you cast a tab or the entire desktop, the Chrome extension somehow mutes the PC audio... which in your case would leave you with no audio at all.
So you'll have to "break out" the audio from the HDMI stream and get audio that way.

http://www.amazon.com/s/ref=nb_sb_s...audio,aps,213&rh=i:aps,k:hdmi audio extractor
Something like the options in the ling below may be what you need.
http://www.amazon.com/s/ref=nb_sb_s...audio,aps,213&rh=i:aps,k:hdmi audio extractor
But in the setup the audio would have to go from this "box" to your audio system.
Chrome cast to "Box"
"Box" to projector for video
"Box" to audio system for audio
I have read that other have used a similar set up to get video and Audio to a monitor that doesn't have a HDMI input. I don't know if sending the Video to the projector and the audio the the audio system would produce sync problems. One way to find out.
I don't see a way to get audio out from you laptop using the Chromecast.
Hope this helps

I was just watching a video on my TV with VLC player using cast entire screen and audio through my PC worked fine, just had to set an audio delay in VLC to get audio synced. I did this thru my bluetooth stereo adapter but I thought there was a minute before I setup the bluetooth that the audio worked through the PC speakers.
Sent from New Nexus 7

Audio issues
Hooked up to chromecast to our vizio m420vt tv and bose solo. No sound will come thru the solo. Only sound is from the tv speakers. Please help?????

sukhrajsingh said:
Hooked up to chromecast to our vizio m420vt tv and bose solo. No sound will come thru the solo. Only sound is from the tv speakers. Please help?????
Click to expand...
Click to collapse
It's one of the following...
1 - You need to change settings on the TV to pass Audio or to Use External Speaker (setting vary from model to model so some hunting and pecking for correct settings is in order)
2 - You need to check your HDMI connection between the TV and the Speakers. HDMI-ARC (Audio Return Channel) usually works on only one input of the TV and it should be labeled as an ARC input. If thats correct then check settings (see #1)
3 - If you have an older TV that does not have ARC support you need to connect an Optical Cable from the Audio Out of the TV to the Amp. If you have that then again See #1!
Take note that EACH INPUT on a TV will have it's own Settings for Audio, CEC, and ARC so just setting the TV defaults may not be enough. Check to see if your Inputs have their own Audio/Speaker config settings.

Got chromecast but my TV does not support ARC! need a workaround

So here's the thing...I've got an oldish HDTV and it does not support ARC audio.
So I can SEE the chromecast just fine, but no sound is going to be a problem.
I had the brilliant idea od getting a cheap 1x2 splitter, running one output to my TV and one to my sound system so that the two devices would be getting the same signal at the dame time and I just switch the input for my sound system to HDMI and it should broadcast sound just fine while the TV broadcasts the picture...right?
Wrong.
I don't know if it's the brand I used or the cheapness of it, but my chromecast would NOT work through that splitter. Even when the splitter had the input and output lights all lit up, supposedly sending signal, the video display was blank.
So, here's the thing: Is there anything available that can either split off just the audio to any other format (I have spare fiber optic port, I have spare RCA and component, I;ve got spare audio connectors aplenty), or failing that, a way to convert HDMI to Hd component or something that will work with the chromecast?
I know there's HDMI to component converters out there, but I'm guessing the chromecast needs some kind of return signal from the TV in order to operate, which is why it didn't work with my splitter maybe?
ANyway, if ayone has a good workaround i;d be much obliged. I want chromecast but I'm obviously not going to buy a new TV just to make a $35 device work

ARC is something else. Your HDMI TV will play audio from an HDMI device. Same with your receiver (unless its an HDMI pass through). You don't need any splitters or anything if your TV has HDMI.

Galahad_Knight said:
So here's the thing...I've got an oldish HDTV and it does not support ARC audio.
So I can SEE the chromecast just fine, but no sound is going to be a problem.
I had the brilliant idea od getting a cheap 1x2 splitter, running one output to my TV and one to my sound system so that the two devices would be getting the same signal at the dame time and I just switch the input for my sound system to HDMI and it should broadcast sound just fine while the TV broadcasts the picture...right?
Wrong.
I don't know if it's the brand I used or the cheapness of it, but my chromecast would NOT work through that splitter. Even when the splitter had the input and output lights all lit up, supposedly sending signal, the video display was blank.
So, here's the thing: Is there anything available that can either split off just the audio to any other format (I have spare fiber optic port, I have spare RCA and component, I;ve got spare audio connectors aplenty), or failing that, a way to convert HDMI to Hd component or something that will work with the chromecast?
I know there's HDMI to component converters out there, but I'm guessing the chromecast needs some kind of return signal from the TV in order to operate, which is why it didn't work with my splitter maybe?
ANyway, if ayone has a good workaround i;d be much obliged. I want chromecast but I'm obviously not going to buy a new TV just to make a $35 device work
Click to expand...
Click to collapse
Make sure the TV sees it as being HDMI and not DVI. The TV should tell you what kind of video signal its receiving.

As the others have said, your TV should be getting the audio from the Chromecast HDMI. For testing, switch your TV speakers on - you should hear the audio.
My (older) Sony TV doesn't support ARC either, but it has optical audio out, so I run that to my sound bar and it works fine.

bhiga said:
As the others have said, your TV should be getting the audio from the Chromecast HDMI. For testing, switch your TV speakers on - you should hear the audio.
My (older) Sony TV doesn't support ARC either, but it has optical audio out, so I run that to my sound bar and it works fine.
Click to expand...
Click to collapse
Whoops. Yeah, it looks like the reason I wasn't getting audio is my TV was set to external amp, I had to turn the built in speakers on in order to get sound.
Now, however, I can only get sound from the tinny onboard speakers and not the big thumping 5.1
Now to figure out how to fix that...

Your TV doesn't have an audio output? Either analog (sometimes labeled "variable out" if it's controlled by the TV volume control) or a digital out?
---------- Post added at 01:44 AM ---------- Previous post was at 01:42 AM ----------
BTW many HDMI splitters aren't HDCP compliant, and those tend not to work for non-computer sources because the HDCP handshake doesn't happen.
---------- Post added at 01:49 AM ---------- Previous post was at 01:44 AM ----------
And yes, something like a (genuine - beware of fakes) HDfury2 or newer will turn a spare VGA or component input into an HDMI input and split out the audio, but I'm pretty sure you can achieve what you want without adding extra conversion.
What make/ model are your TV and sound system?

Can't you plug the CC into an HDMI input on your receiver, as you would any other input device?

Agree, technically that's how mine is connected. My sound bar has 3 inputs and its HDMI output goes to my TV, then the optical output from the TV goes back to the sound bar input (since my TV doesn't support ARC).

bhiga said:
Your TV doesn't have an audio output? Either analog (sometimes labeled "variable out" if it's controlled by the TV volume control) or a digital out?
I have RGB cables that go from the TV to the cable box, and a fiber optic that goes from the cable box to the sound system/dvd player
The TV is connected to the sound system/dvd by an HDMI cable, and the sound system only has the one HDMI port and for some reason that HDMI connection doesn't seem to carry sound from the TV to the sound system
The TV has spare stereo outputs (Red/White), and a round yellow Digital Audio Coax port.
The sound system has a spare fiber optic port, and might have a spare red/white stereo port (but that of course would only give me stereo and not 5.1
What make/ model are your TV and sound system?
Click to expand...
Click to collapse
sylvania lc320slx TV connected to a Panasonic SC-BT230 5.1 surround sound/blue ray player
So at the moment, unless I can figure out why the HDMI cable isn't porting sound from the TV/CC, it looks like the only way to get sound out of the good speakers would be Stereo only.
Unless maybe something like this? http://www.amazon.com/Digital-Optic...8ZQY/ref=sr_1_3?ie=UTF8&qid=1385195890&sr=8-3 convert that digital audio coax on the TV into a fiber optic to plug into the spare fiber optic jack on the sound system?
scoppola said:
Can't you plug the CC into an HDMI input on your receiver, as you would any other input device?
Click to expand...
Click to collapse
Only one HDMI port on the sound system and that's what the TV's plugged into
Click to expand...
Click to collapse

Okay... I looked at your TV's spec sheet and your sound system's manual.
Your TV has three HDMI inputs, two on the back, one on the side.
Your combo sound system/BD player has a single HDMI output, which is how your BD/DVD disc playback gets picture on the TV, and two TOSlink optical digital audio inputs.
Your cable box is connected to the TV via Component video (red/green/blue) connection to the TV, and TOSlink audio (optical) connection to one of your sound system's inputs.
Since your TV doesn't support ARC, it can't send decoded audio back "up" the HDMI connection to the sound system, so we need to use a another connection to get the decoded audio output from your TV back to the sound system.
Galahad_Knight said:
Unless maybe something like this? http://www.amazon.com/Digital-Optic...8ZQY/ref=sr_1_3?ie=UTF8&qid=1385195890&sr=8-3 convert that digital audio coax on the TV into a fiber optic to plug into the spare fiber optic jack on the sound system?
Click to expand...
Click to collapse
Close, but you want one that converts the other way, from SPDIF coax to TOSlink optical.
Your TV will "break out" the audio from the Chromecast connection and output it on the SPDIF coax connection, it'll go through the converter (don't worry about delay, it's just a signal medium conversion, not an re-encode) to your sound system's TOSlink optical input, and you should hear audio, assuming your sound system is set to the correct input.

bhiga said:
Okay... I looked at your TV's spec sheet and your sound system's manual.
Your TV has three HDMI inputs, two on the back, one on the side.
Your combo sound system/BD player has a single HDMI output, which is how your BD/DVD disc playback gets picture on the TV, and two TOSlink optical digital audio inputs.
Your cable box is connected to the TV via Component video (red/green/blue) connection to the TV, and TOSlink audio (optical) connection to one of your sound system's inputs.
Since your TV doesn't support ARC, it can't send decoded audio back "up" the HDMI connection to the sound system, so we need to use a another connection to get the decoded audio output from your TV back to the sound system.
Close, but you want one that converts the other way, from SPDIF coax to TOSlink optical.
Your TV will "break out" the audio from the Chromecast connection and output it on the SPDIF coax connection, it'll go through the converter (don't worry about delay, it's just a signal medium conversion, not an re-encode) to your sound system's TOSlink optical input, and you should hear audio, assuming your sound system is set to the correct input.
Click to expand...
Click to collapse
Woot! you're a lifesaver, man. Have all the +1s
I'm gonna snag that up now and report my results.
After my failed splitter experiment this should put me at about $50 worth of cables and doodads to support a $35 dongle
That'll teach me not to come here first.

Haha if it makes you feel any better, I have about $250 of gear to get Chromecast on a 20-inch SD tube TV. Half of it was already stuff I had though.
Still HBO Go and AllCast/AirCast make it quite useful.
Much easier than transcoding stuff and pushing it back to the TiVo hooked up to that TV.

bhiga said:
Haha if it makes you feel any better, I have about $250 of gear to get Chromecast on a 20-inch SD tube TV. Half of it was already stuff I had though.
Still HBO Go and AllCast/AirCast make it quite useful.
Much easier than transcoding stuff and pushing it back to the TiVo hooked up to that TV.
Click to expand...
Click to collapse
LOL, wow, after a certain point it'd almost be cheaper to grab a new TV, or at least a decent pawn shop model
But of course, it's the principle of the matter. A new TV would be admitting defeat

Very true (and what I advise others to do - unless you have a very special display or circumstances, much cheaper to upgrade to something better), in my case I have other uses for the new gear once this invincible tube finally retires, heh. Plus I'm a "learn by doing" kind of person...

Galahad_Knight said:
Woot! you're a lifesaver, man. Have all the +1s
I'm gonna snag that up now and report my results.
After my failed splitter experiment this should put me at about $50 worth of cables and doodads to support a $35 dongle
That'll teach me not to come here first.
Click to expand...
Click to collapse
Just curious as to what you ended up doing.

bhiga said:
Just curious as to what you ended up doing.
Click to expand...
Click to collapse
Whoops! Sorry I forgot to get back about my results...I was too distracted watching chromecast in glorious 5.1
That converter worked exactly to spec. All I have to do is cast a video and my TV automatically switches video inputs, then I just tap the autio input button on my sound system remote ocne and it pops over to the second toslink port and it comes right out.
Only hitch is that it takes a second for the audio to switch over so I have to pause the video once I cast it.
And the second the video ends and there's no active output from the chromecast the audi immediately switches back to the cable box, but hey at least it works!

For the record, I solved the audio switching problem. It was super frustrating because every time I paused it would switch back to the cable box audio and it always took a second or two to come back.
Problem? Had my TV plugged into the wrong Toslink port. Port 1 is the default TV input. For the longest time all we had plugged into it was the cable box so it was in one.
Switched the TV to one and cable box to two and blammo!
I chromecast something and the TV automatically switches to the HDMI port for the dongle and the audio automatically switches over to the input from the TV! Perfection.
Then all I have to do is manually switch inputs back to component for video and digital 2 for audio and i'm back to watching cable

Galahad_Knight said:
I chromecast something and the TV automatically switches to the HDMI port for the dongle and the audio automatically switches over to the input from the TV! Perfection.
Then all I have to do is manually switch inputs back to component for video and digital 2 for audio and i'm back to watching cable
Click to expand...
Click to collapse
Great! I love when a plan comes together!!

the chromecast is an amazing device so far. i can easily watch speed runs from it. picture quality is great. my phone feeds better than my lappy for sure.

sa1tine said:
the chromecast is an amazing device so far. i can easily watch speed runs from it. picture quality is great. my phone feeds better than my lappy for sure.
Click to expand...
Click to collapse
I noticed that too, it;s weird! But if I'm casting something from a tab I pretty much have to use the laptop.
Protip: I found out that chrome will open mp4s in-browser so if you want to play a local video just C&P the file location into your chrome browser and cast away!

Chromecast audio troubles

I´ve been reading this through these chromecast threads and I cannot seem to sort out my problem..... I have Samsung UE40EH5000 tv and Sony STR-DG700 receiver. I have tried plugging chromecast into both tv and receiver but I am only getting sound out of the tv speakers. I have run HDMI from receiver to tv but no sound from receiver, I have also tried audio cables into the receiver from the tv but no sound. I have an ipod and satellite running through receiver working fine. Please help me x

kimii1 said:
I´ve been reading this through these chromecast threads and I cannot seem to sort out my problem..... I have Samsung UE40EH5000 tv and Sony STR-DG700 receiver. I have tried plugging chromecast into both tv and receiver but I am only getting sound out of the tv speakers. I have run HDMI from receiver to tv but no sound from receiver, I have also tried audio cables into the receiver from the tv but no sound. I have an ipod and satellite running through receiver working fine. Please help me x
Click to expand...
Click to collapse
Most likely it's just your TV settings - it probably doesn't support ARC (Audio Return Channel) as I don't see it mentioned in the Quick Setup or Manual.
If that's the case, you need to run the Digital output from the TV back into your receiver. See page 66 of your TV's Quick Setup (which IMO is a better "manual" than what Samsung calls the manual).
Set your TV's Speaker Select to External Speaker. It says that on TV Speaker it should have sound out both the TV's speakers and external output, but at least on my Sony TV and Sony sound bar, having both on produces a strange echo effect.
(See page 53 of your TV manual)
Also check on your receiver that the HDMI port has been properly assigned to the input that you're using.
(See page 66 of your receiver manual)

bhiga said:
Most likely it's just your TV settings - it probably doesn't support ARC (Audio Return Channel) as I don't see it mentioned in the Quick Setup or Manual.
If that's the case, you need to run the Digital output from the TV back into your receiver. See page 66 of your TV's Quick Setup (which IMO is a better "manual" than what Samsung calls the manual).
Set your TV's Speaker Select to External Speaker. It says that on TV Speaker it should have sound out both the TV's speakers and external output, but at least on my Sony TV and Sony sound bar, having both on produces a strange echo effect.
(See page 53 of your TV manual)
Also check on your receiver that the HDMI port has been properly assigned to the input that you're using.
(See page 66 of your receiver manual)
Click to expand...
Click to collapse
I actually think this is a problem on his Amp side....he did say that he tried plugging into the Amp directly and got the same result.
If his TV doesn't support ARC he could use an Optical cable from the TV to the Amp and that would work.
But he might need to check the Audio settings on his AMP for that particular HDMI port.
Not sure about the devices he says works but I wouldn't expect a IPod to plug into the same HDMI plug he was trying to use and most older Sat boxes usually use an Optical input instead of the HDMI.
And you can change the Input on most Receivers to set what Audio source to take from be it optical or HDMI.
He should check the settings for that particular output and see if the Audio is set to HDMI.

Many thanks guys for your help but its still not working, I haven´t tried an optical cable because I need to buy one and they are about 30-40 euros here, and I thought audio should run through HDMI.
The chromecast is from the USA and I am in portugal will that make a difference?
Here is my setup....Chromecast plugged into TV, HDMI cable plugged into TV and run to receiver (3 HDMI ports on receiver, not sure which one is correct, but have tried all three I think!!)
Have tried with TV speakers and external speaker settings on TV.
I have tried the HDMI menu on the receiver.
Will an optical cable be the solution?

kimii1 said:
Many thanks guys for your help but its still not working, I haven´t tried an optical cable because I need to buy one and they are about 30-40 euros here, and I thought audio should run through HDMI.
Click to expand...
Click to collapse
Ouch, that's horribly expensive. Optical cables should be US$10 or less, though you can definitely spend more. But optical cables do not need shielding the same way electrical cables do.
Not sure where you are, but here's a quick search on Amazon UK for price comparison
http://www.amazon.co.uk/s/ref=nb_sb_noss?url=search-alias=aps&field-keywords=toslink+optical+cable
kimii1 said:
The chromecast is from the USA and I am in portugal will that make a difference?
Click to expand...
Click to collapse
No difference whatsoever.
kimii1 said:
Here is my setup....Chromecast plugged into TV, HDMI cable plugged into TV and run to receiver (3 HDMI ports on receiver, not sure which one is correct, but have tried all three I think!!)
Have tried with TV speakers and external speaker settings on TV.
I have tried the HDMI menu on the receiver.
Will an optical cable be the solution?
Click to expand...
Click to collapse
If you hear audio on your TV, then yes, the optical cable will solve the problem by sending the decoded audio from the TV back to the receiver.

kimii1 said:
Many thanks guys for your help but its still not working, I haven´t tried an optical cable because I need to buy one and they are about 30-40 euros here, and I thought audio should run through HDMI.
The chromecast is from the USA and I am in portugal will that make a difference?
Here is my setup....Chromecast plugged into TV, HDMI cable plugged into TV and run to receiver (3 HDMI ports on receiver, not sure which one is correct, but have tried all three I think!!)
Have tried with TV speakers and external speaker settings on TV.
I have tried the HDMI menu on the receiver.
Will an optical cable be the solution?
Click to expand...
Click to collapse
Yes Optical would solve your problem, The wiring you described would only work if your amp and TV support HDMI-ARC which really requires a more recent TV and AMP. That port is usually specially marked on both the TV and AMP side.
I'm betting most of the cost of that cable is in the shipping.but Ebay has a slew available that would bring the price down.
http://www.ebay.com/sch/i.html?_sacat=0&_from=R40&_nkw=optical+cable&rt=nc&LH_BIN=1

Many thanks guys the optical cable worked straight away, I managed to buy one local for 15 euros, was worth it!
One other issue I have come across which you may or may not be able to help me with.
One of the things I want to do with chromecast is run karaoke videos from YouTube, I have a mixer the microphones are plugged into but I found the optical sound was overriding the sound. I have sound from the tv (youtube) but no sound from the microphones, If I unplugged the optical cable I lose sound from the tv and get sound from the mics.
Is there a way around this?

kimii1 said:
Many thanks guys the optical cable worked straight away, I managed to buy one local for 15 euros, was worth it!
Click to expand...
Click to collapse
:good:
kimii1 said:
One of the things I want to do with chromecast is run karaoke videos from YouTube, I have a mixer the microphones are plugged into but I found the optical sound was overriding the sound. I have sound from the tv (youtube) but no sound from the microphones, If I unplugged the optical cable I lose sound from the tv and get sound from the mics.
Click to expand...
Click to collapse
What's the make and model of your mixer?

bhiga said:
:good:
What's the make and model of your mixer?
Click to expand...
Click to collapse
Not sure and I´m not with it! Will post tomorrow.

Not sure thats possible because the Chromecast takes the content directly from their servers if I'm not mistaken.
You would have to take the Output of the Audio from the TV or Amp and Mix it all Post Chromecast.
Easiest way....
CCast into TV, TV into Mixer, Mic into Mixer, Mixer into Amp. Amp to Speakers
If your mixer has an Optical Input that can be mixed all the better but most likely your going to be Analog from the TV to the Mixer.
You CAN get a box that will pull Audio out of an HDMI signal to analog as well but it's overkill since the TV will give you the same thing already.

Sounds like it might be a mix of analog and digital in the path. Will wait for tomorrow's update.
Sent from a device with no keyboard. Please forgive typos, they may not be my own.