First, I would like to mention that I have learned an incredible amount from this forum. Thank you guys for your expertise and time here. Anyway, onto the question:

I previously had my MCE connected via S-Video to my CRT.

I purchased a 37" LG HDTV (LG 37LC2D) two days ago. Obviously, S-Video is not good enough anymore.

I plan on upgrading my video card with DVI output. I also plan on purchasing a DVI to HDMI cable to run it from my MCE's DVI out to my HDTV's HDMI in.

I know that I need a separate audio connection from my MCE to the HDTV. (I plan on having sound come from the HDTV's speakers--very basic hookup.)

The LG 37LC2D does not have anything that indicates "Audio In" when using DVI-to-HDMI. There is however in the manual (I have taken the liberty of scanning it - http://chlog.org/images/lg-manual.jpg Link) an input for something they call "Audio RGB/DVI" under "RGB IN". The manual also indicates that I need a RCA to 3.5mm cable. Specifically, the RCA connects to the MCE's audio out and the 3.5mm goes into the "Audio RGB/DVI In". The problem is, I do not have RCA audio out on my MCE. My question is:

Can I get a 3.5mm to 3.5mm (M/M) cable and connect one end on my MCE sound card's audio out and the other end on the HDTV's "Audio RGB/DVI In".

Please help. I do not want my new (and first!) HDTV to blow up on me! =p Please let me know if I need to supply any more information.

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Athlon 64 X2 3600+
1GB DDR2 667MHz FSB (x2)
GeForce 7600GS 256MB
Windows Media Center 2005

piece-o-cake, all you need is this (the mini 3.5 to RCA), and connect the mini to the Line-Out of your sound card, and the RCA's to the Audio-IN of your TV:

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Mike Garcen
TGB Moderator | MissingRemote Editor/Reviewer| Microsoft MVP - Media Center
My MCE Setup

actually, not all tvs use that.   mine is a mini to mini.

Although if your getting a new video card anyhow.  seriously consider going to one with HDMI and HDCP output.  then you connect it to your spdif header (or loop the cable from the back to the back of the video card and then its a standard hdmi cable with sound to the tv.

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Bryan Socha
Media Center MVP

accident - i think you're right. i went ahead and ordered a 3.5mm M/M cord and a geforce 6200 256mb with dvi-out.

i'm not really sure if i follow you with your spdif and hdmi video card setup, but it doesn't matter because my mobo is OLLLLLLLLD and it only accepts AGP. but for future notice, are you saying that i should connect the spdif out of my audio card and into the video card, and then connect the hdmi from the computer and into the tv, thus giving me sound and video?

and to the person that first replied in this post - that's what i did for my crt actually because it actually told me that if i hooked up s-video, i had to hook up the audio to AV1. but my new tv is a little different because it said if set my tv-source on HDMI, then the audio will not come in through the AV1 inputs. I'm pretty sure I have to get a 3.5mm M/M cord. thank you for your help however.

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Athlon 64 X2 3600+
1GB DDR2 667MHz FSB (x2)
GeForce 7600GS 256MB
Windows Media Center 2005

depending on which 6200, it may not help with decoding HD video too well.  7600gs are around $55 right now.

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Bryan Socha
Media Center MVP

I am running into that problem right now... I have my 42" sharp running as an external monitor. I have a 2 in 1 Monster cable as my audi jack and Im getting no sound at all from any input. Tried the jack in the computer to test power with soe headphones, all good. Internal cpu speakers also working. As soon as I plug in cables from tv to cpu, no sound? Any thoughts on this?