Save for the obvious potential bandwidth issues, and the simple fact that I'm aPC user, this is a damn cool service. I'd love to have my home music collection available anywhere.

"TunesAtWork lets you listen to your personal iTunes music collection while
at your office or lab, even though your iTunes collection resides at home.
TunesAtWork is a specialized web server that runs on your home Macintosh
and serves web pages that present your music collection (including
playlists) organized visually much the same as in iTunes itself. This makes
it easy to find what you're looking for."

http://www.tunesatwork.com/