Will do if this re-occurs. Unfortunately I am already in the process of copying and recopying the files so I may have it fixed. However, this has happened before and if it happens again I will record what the player is playing and Send it to you. It is a mystery and has happened twice, only recently and only since the addition of the 64g sd card. (never happened with the other sd cards I had so not sure if that is an issue) Will keep you posted. Dale