Remix Sound

http://www.soundsnap.com/

http://www.audiosparx.com

http://www.audiosparx.com/sa/play/play.cfm/sound_iid.282867

http://www.audiosparx.com/sa/display/search.cfm/style_iid.66/style.1930s

http://www.loopsound.com

http://www.loopsound.com/home.php?cat=97

http://www.looperman.com/acapellas.php?name=&gid=&ord=date&dir=DESC&Search=Search+Acapellas
http://www.looperman.com/loops.php?type=Wav&cid=24&gid=&tempo=&ord=date&dir=ASC&Search=Search+For+Loops