Perhaps they are still mp3's but simply have the WMP icon on them because WMP is your default audio player. Could that be the case?
Another possibility is ... depending on which version of LW you're using, there was a bug with WMP if you added the files to WMP's playlist but then used the Describe function in LW's Library. It has something to do with WMP not being able to read compressed id3 tags. This would corrupt the files & WMP would no longer be able to play them. Could that be the case? |