I'm not sure whether you will be able to get DRM licenses with tinyXP. Try a full version of Windows XP or some other Windows.

Please note that Microsoft allows to re-acquire licenses for your CD ripped .WMA copy-protected files 8 times only.

The following thread will help you to remove copy-protection after getting valid licenses:
Remove DRM from music files with WMP protection ripped from Audio CDs

And never ever rip CDs to DRM protected files!

p.s. It might be better to rip your CDs one more time if you have the originals.