!srk streaming question!

A while ago, I saw a thread on here with someone’s prnt screens of someones desktop running firefox on one side of the monitor, and a few “popped out” streams for SRK. The streams wasn’t in a browser or anything at all, just independently floating there beside Firefox (Or whatever browser he was using) – I can’t find out how to do it which is driving me crazy!!

Can anyone help me? Much appreciation.