Or you could just modify the following registry settings:
[HKEY_LOCAL_MACHINE\Software\Microsoft\MediaPlayer\ Preferences]
"UnattendedPlayback"=dword:1
"FastCacheReserve"=dword:00800000
"LocalCacheReserve"=dword:00800000
Or try my .cab which does it for you:
http://www.fileshex.com/download.php...6c593cbd0f7759