Fuze+ plays, but then no sound, but continues playback?!?

[music_lover001]

Hi all -

My Rockboxed Fuze+ did something goofy:  it kept on playing the track I was listening to, but the sound stopped.  It was not locked up.

I checked different tracks (same problem), both on the MircoSd card, and on the internal memory, with the same result:  The track would play (the elapsed time was shown - and elapsing properly, and the bar was moving), but there was no sound.  However, the radio worked properly, as did the OF.

Just for the fun of it, I went into "Reset settings," and used that function.  That fixed the problem.

My fuze+ was using the 370ed6d-130426 build at the time (I just changed to a newer build yesterday).  This happened two or three days ago.

As I said:  goofy.  Any thoughts?