WMP 9 wma tag info problem

i'm having a problem using the update music files
internet feature to insert the correct info into my wma
files from my custom cds. when i try to use this feature
with mp3s, it works just fine and updates them with
correct track, artist etc...however when i try to do it
with wma files it just messes everything up.

for example, if i have 2 wma files in a folder and try to
edit one, most of the time it will incorrectly identify
that song's album and info although i'm telling it most
of the correct info. when i update the album info, it
chances the info of the other wma file in the folder
without my permission. this has only happened with wma
and never mp3 files. anybody have a solution to this
problem??