Old Napster WMA files won't play - no license?

I have about 100 music files downloaded from Napster prior to their May 2008 conversion to MP3. I no longer have a Napster subscription. When I try to play any of these files, I get a message that I do not have a license. I PAID for these tracks!!! How can I play them, convert them to MP3, burn them to CD, anything??? I WILL NOT get another Napster subscription!!!

If you did indeed buy them (and not just [I]rent [/I]them using the monthly deal) then you should contact Napster. AFAIK you need the license to play or un-DRM them.