DRM license problem after ripping CD to .WMA with WindowsMediaPlayer and burning .WMA

ok so this is the story.
ripped some old cd's using WMP but didnt realize they were being ripped to WMA. after doing this i burnt a data disc with the wma music folders (still not realizing they where in WMA.) well everyone knows what happens next. use the data disc to put music back onto PC but when i proceed to play in my music player it says i must aquire a license before they will play.
umm.... help
heh..
Thanks

Adam