[Hugh]

There was a thread on this on 09-03-2015, and when I reinstalled my backup into Pro in May 2015 I had the same problem, using a Galaxy Tab 2 10.1       I submitted details to Mike, but it seems a rare problem affecting certain tablets only, rather than a bug as such.
A workaround is to drop the mp3 from the song, then re-attach it.

Hugh