OFTEN when I use the WINDOWS MEDIA PLAYER Advanced Tag Editor I will see an album "name" like USSM10023681. And, of course, it also shows up in WMP when playing. When I say "like" USSM10023681 MANY start with USSM and is followed by numbers. It is not for just one particular artist but for many of different genre. This number is an actual one. I did a search on it but came up with nothing.

Any ideas what this is?