Do a google search for: "myspace background tiles"
(Believe me, tiles are best and are not as tacky as pictures. Pictures being repeated are horrendous on websites)
As for music, do you know the band you want the music from? You could have a look around in MySpace Music, there's a link to it in MySpace, if the band as a music player you can click "add" next to a song and it is added to your profile.