I posted a similar thread but technically it was about a different VST plug in so bite me!
I present DML! (Digital Musician Link)
http://digitalmusician.net/index.php?id=325
In order to download you have to register at the site (because you have to log in when you launch the vst) but they have a free account option therefore this vst is free.
Allows you to stream and record input (while in your DAW not in reason, it is a VST afterall) from your friend or partner over an internet connection. Yes just Place this on your master track in your favorite DAW and sync up to your home dog peeps and Jam away!