This is strange really!
PabloMack , do you use Windows media player?. Windows 7 ?
There are some default settings i do not like.
I did change them immediately . Did you look at the Privacy (my Windows is not in English ) tab ?
There are some boxes they say something like : Get the media info of the music files and update them.
You should look at the other settings like library(?) etc. too.
But this shouldn't happen at the first place really