How do I get sound to my X360?

[disolitude]

AnthonyW86 said:

He wants a cable that he can use on his PS3 also, so a HDMI to DVI cable is the best solution(you don't need a separate adapter). Bought one from ebay for about $20 i believe.

I guess that makes sense... I just wouldn't want to ruin my RCA 360 cables.