The riff file would only load to 45%. I've just about had it with the Rifftrax player. It wouldn't be so bad if the .riff file was additional to the mp3 rather than also containing the .mp3, especially since if you want both, you have to download them because you can't get the .riff from the .mp3 and in order to get the .mp3 from the .riff you have to be able to load it (and have the DVD in the player) which you frequently can't. I spend more time trying to listen to the riff than actually listening to it.