Hey,
People should go to this guys blog. He was a sh!t-ton of .mogg files that you can easily download for free. You will need a program called Audacity tho. Just to convert the files into .wav files to use. Well I use Pro Tools after I convert them...These are from Rockband. So they are not as detailed as the other multis that were out a few months ago. They usually consist of
2 seperate Kick Drum tracks
2 Seperate Snare Drum tracks
2 Seperate Room mic/cymbals/overhead mics
1 Bass
2 seperate guitar tracks
2 seperate lead vocals
and certain songs have extra stuff as needed...
Its all explained if you read what the guy has posted...and no its not my site...
http://xerotheory.blogspot.com/
Just read what is at the top and you can scroll down for the files...
enjoy...
I think he even has the Beatles 4-tracks too...