It's my first time at the Vault and I'm having the same problem to stream any concert. It opens the CV's Player window, stops at "servers handshaking" and get the "sorry... Network connections failed or timed out..." message. I've tried the cleaning cookies, history and caché things, but didn't work. I'm using IE7, but it didn't work on Firefox either.
Anything else I can try? Are there network problems still?
Regards.