There is a bunch of torrent sites that have mac stuff...all music and movies should work on your mac as long as you have the proper viewing devices. I normally go to torrentmatrix.com or isohunt.com they seem to be the best to my liking
I tried to download torrentmatrix and isohunt but had no luck. Do you have more detailed suggestions. I'm brand new to trying to download movies to my PowerBook G4 OS 10.4. Thanks.