Has anyone tried Ninjam?

[Robert]

http://ninjam.com/

Sounds interesting:

NINJAM is a program to allow people to make real music together via the Internet. Every participant can hear every other participant. Each user can also tweak their personal mix to his or her liking. NINJAM is cross-platform, with clients available for Mac OS X and Windows.

NINJAM uses compressed audio which allows it to work with any instrument or combination of instruments. You can sing, play a real piano, play a real saxophone, play a real guitar with whatever effects and guitar amplifier you want, anything.

 

[Rocket]

Some folks tried WAGjam last year. That also allowed people to make real music together... left a pretty bad aftertaste though.
Better stick to strawberryjam.