I just was tipped off to this website:
http://www.openbandonline.com/
Sounds like a great way to practice playing for contra dances. You can
use this software:
http://www.ronimusic.com/
The "Amazing Slow Downer" to turn the podcasts into a slow jam.
Enjoy!
Chris Weiler
Goffstown, NH
Too embarrassed to play with real musicians yet.