As has been pointed out, you can find a number of sites that have what you're looking for ready to go. Simply DL them and you can edit or hire someone else to edit them if you want a more perfect file to play to.

I've never used any of those sites but I think they charge a small fee for each song you want to DL. Probably well worth it if you're putting a show together or something like that. I know I'd certainly check out that option before I spent hours working on a bunch of cover tunes for a couple of bar/club sets.

You can find my music at:
www.herbhartley.com
Add nothing that adds nothing to the music.
You can make excuses or you can make progress but not both.

The magic you are looking for is in the work you are avoiding.