I'm writing a simple audio player based on WMP ActiveX control, for MP3 and WMA, I found WMP can get the cover and album correctly, but the WMP ActiveX control can't do that, it means the ActiveX control always get the information from the local, not from WindowsMedia.com, if you play the file with WMP, then ActiveX control can get these information. I used HTTP SPY tool to grab all commands what WMP sent. I found WMP sent a GUID to server. I want to send the same HTTP command like WMP, but I don't know how to create the GUID for each file? Thanks.