I didn't talk about this in the past because they were a pay site. 10 bucks a month, but now it's FREE!!!
Small app installed on PC with all the music/tv shows/pictures.... You can then stream that to your desktop/pda!
I have even done this on my PPC-6601 using Sprint's Vision network and I must say, I am impressed.
I didn't try the TV part because I am still using BeyondTV to record everything but the watching and listening part works great!