If they work one place and not another then this thread probably won't solve your problem. Sometimes when you internet connection is running slow obviously streaming will slow down as well and tracks with take longer to load. Apart from that, if it works on one computer it should work on the next.
The player on trubeats.com runs of a completely different server and it's not running from a streaming server either. If you ever want to test against another player, test the one on
www.myflashstore.net/features - this one runs of the myFlashStore server.