Motorola Motoactv :: "Unplayable File" For Audio Files?

My MOTOACTV has been acting funky lately. It's done a couple of weird things (including appearing to "brick" last night before dying), but the most frustrating is that audio files that used to be playable on it are now listed by the device as unplayable.I specifically converted protected audio files in iTunes to unprotected MPEG files (using TuneClone) and made sure to use just these files when creating the playlists for my MOTOACTV. For several weeks (I've had the product for a little over 2 months), all was well. The songs played just fine, the playlists worked as expected, etc... Lately, though, not so much.

The songs in question are still listed in my "Songs" list as well as under their respective playlists, but rather than being black text, they are a medium gray. When tapping on these songs (and it appears to be about 30% of the songs), I get the following message:Unplayable FileThis file appears to be an unsupported type and cannot be played.I was wondering whether the file(s) might have been corrupted somehow, so I completely unsynced all of my playlists, (theorhetically) deleting all music from the device. MotoCast USB reported all files being removed from the device. Then, I resynced all files, but the problem remains.Then, I thought that perhaps the ORIGINAL files were corrupted, so I tested the files on the device through Finder, and found that they played just fine in iTunes.

Another issue that is perplexing me is the fact that I have FAR more songs listed in my "Songs" list than should be present on the device. Currently, I've synced just 2 playlists, with a total of 46 songs, though there is a good bit of crossover, so I should have something like 30 songs on my device. I have many, many more than this liste