Royalty Free Broadcast Music

Where can you get royalty free music/sound effects without restrictions?

I see people producing video for Utube, Bebo et cetera. Is there a source of music which is entirely free without restrictions or come backs? Most royalty free websites are not royalty free and are for personal use not public broadcast.
It is the music and sound effects I am looking for.

you could try lime wire, but you have to download it