FYI, WMP seems to be soft resetting the device in this build. Use this reg edit to fix, and install the attached cab:
Code:
[HKEY_LOCAL_MACHINE\Software\Microsoft\MediaPlayer\Preferences]
"LocalCacheReserve"=dword:04000000
[HKEY_CURRENT_USER\Software\Microsoft\MediaPlayer\Preferences]
"LocalCacheReserve"=dword:04000000
Will be fixed in future build.