"File format not supported" randomly appears

I also have been having this problem with NPR podcasts.  I have had 2 other Sandisk players before the Sport and have never had a probem like this.

The really odd thing is that the podcasts start to play and then after playing fine for about 10 seconds it stops and says “file format not supported.”  It does not happen with all files nor even all files of a given podcast.

It is very disappointing to upgrade to a new player and have it be less functional.  

Has anybody from Sandisk helped anyone with this?