I am a composer of instrumental production music for film, television, and advertisements.
I also wanted to add http://www.stockmusichouse.com/
It's a royalty-free music site, and for each song you license you get multiple versions included (full length song, shorter edits, loops, stingers/logos, etc.).
I am a composer and I sell royalty-free music at http://www.stevenbulinskimusic.com
I provide stock music at low prices because it come directly from me. I don't have to share a cut with any other music libraries or businesses. Prices are only $5.00 for non-commercial uses, and $15.00 for commercial use. I do have a couple of free tracks available at http://www.stevenbulinskimusic.com/stockmusic.html