Motorola Droid X: Thoroughly Reviewed - AnandTech :: Your Source for Hardware Analysis and NewsThe music player also for whatever reason doesn’t play over HDMI when the cable is connected. However, with a bit of trickery I could get pandora or whatever audio I wanted playing over the HDMI out. Just fire up the music, then fire up gallery. Boom, all your audio will go over HDMI. It’s handy I guess if you’ve got an A/V receiver but don’t have a headphone 1/8” audio cable laying around.