If you are looking for free, legal music
I like it a lot ...
Downloads are available as MP3s and OGGs.
Perhaps I should add that the MP3s are all excellent quality as
they are encoded with LAME -preset-standard (~192 kbps VBR).
All the stuff is licensed under the Creative Commons
I used to think that all that "free music" was crap, but this is not true,
there are some real gems to be found.
Give it a try, you won't regret it, I promise