If you are just wanting music and you have either a wireless network setup or an ethernet connection near your home theater stuff, just get an AppleTV, Roku, etc. I have the AppleTV and it works great. Lots of people love the Roku, I understand it's a bit more flexible on playing video files...at any rate, they'll access your existing pc. In the case of the AppleTV, it sees your playlists and you can use them if you want-just leave Itunes open on your pc. It's so simple that my parents and my in-laws both use it as well. It's not as fancy as a HTPC or running Windows Media Center like my brother in law, but it's much simpler from the get go.