Afaik, the trick was to stream (via http, I assume) the first few hundred kilobytes or so from fast/expensive servers and then try to p2p the rest in some cleve

Afaik, the trick was to stream (via http, I assume) the first few hundred kilobytes or so from fast/expensive servers and then try to p2p the rest in some clever order. I guess seeking also triggered the fast/expensive path for a while.