issue playing files directly on sansa c200

[krisdb]

I have the current build of Rockbox (r16011) for the 1GB sansa c200 installed and it works fine, except when playing certain files directly.  I download podcasts into a [root]/Music/Podcasts directory I created, and instead of trying to find them through the database, I drill down, through the Files menu option, and play them directly.  On a clean install of Rockbox, this works fine, but after a week or two of usage, they will no longer play.  I will click on them, and the little 'play/loading' symbol (in the top right) shows up, then disappears and nothing plays.  The only way to play them, is to manually add them all to a playlist, then play them, but I'd rather not do that.  Also, those files will play if I play them through the Database, but I'd rather not have to hunt for them.

All the podcasts are in mp3 format, no DRM or anything.  What I like to do is, after I have finished listening to the podcast, I will hold the select button down on the file, until the menu option comes up and I will delete the file directly from the sansa, individually.  Could this be screwing something up?  This only occurs with that 'Podcast' directory, I have other directories of mp3's in the same [root]/Music/ directory and these play fine when clicking on them (though Files), its only the 'Podcast' directory, after adding/deleting files over a period of a week or two.  A fresh install of Rockbox works fine.

Any insight would be appreciated.