SanDisk Ultra

My flash drive won’t accept wma files now. It did and now it doesn’t.

Are the files copy-protected (aka DRM-encrypted)?

Yes they are.  I transfered some wma and mp3 audiobooks to my flash drive, about 34 hours of listing.  I played them on my Mercury MySinc player. The first time I tried to play, it came back as protected content, but then it played both wma and mp3 files all

. Then on a different computer I deleted them, so I could transfer more mp3 and wma audiobooks to my flash drive, but the drive would not allow the transfer them this time.

Then that’s why.