[jianshen]

My response to this will always be: whoever solves live music performance (as in two or more musicians in two different locations happily playing together over the internet) will win the video conferencing wars.

It's not just latency, it's the non-verbal cues, dynamics (including silence that often represents acknowledgement), "energy" and rhythm that I miss about in-person communication.

[oever]

Jamulus is pretty good. With a good audio card, cabled connection a 25ms delay is achievable.

You're right. Talking on it feels much better than talking on the phone or video conference.