Here is something my friend Steve sent my way that I have yet to test out, but it looks like it might work? The Windows client is in Beta though which could be troublesome. If I get the time to run some tests, I’ll post the results here. Musicians Together Apart.
The hardest number to hit for most people will be the ping which from the Network Testing page needs to be under 50ms, best if under 30ms. All the other stats seem very doable with most broadband.