I play a song stored on 16GB microSD card plugged into my Atrix. About halfway through it will just stop. Happens in both Meridian and Winamp on the same track. Comparing the md5 of the file on the SD card to the file I copied on my computer they do not match. This has happened with several files. It gets even weirder, when last week I copied an album, and the MP3 files got intermingled somehow with files that where already on the phone. While playing the file, the sound cut between what was supposed to be in the file, and another song.