OK, now this is bigger. I updated to 3.1 and still the same. On a whim, I loaded Redemptive 3.1. STILL NO GO. So it's not ROM related. Must be something somewhere else, but I am not sure what that would be. I thought maybe it was some system setting that I was restoring, but I loaded the other ROM, went to Market, downloaded Dropbox, and the files would not play on a fresh load.
Of to other regions of the Web to find where a fix might be...