Hey, my MP3 files are creative commons license so feel free to go to Dan-O's Free MP3 Music Downloads
to download or link to them and give them away via your site. Of course I ask that you don't change the file names or properties and you provide a link back.
They are also royalty-free so you can resell them on their own or package them in a product.
By the way so many musicians should read this forum. If you go to the music business forums its like the blind leading the blind when it comes to IM.