The kiosk hounds of NeoGAF snapped a handful of photos of the up and running Gamestop Wii display units, only to uncover a heretofore unknown (possible) option for Monster Games racer Excite Truck.
Appearing on the sound options menu, the SD Card option, seemingly inactive here, leads us to believe that the potential for reading MP3's from the memory card will at least be an option in one game.
Nintendo has made mention of MP3 playback previously, indicating that custom soundtracks would be available during Wii Photo Channel slideshows. This makes the muddin' hayseed within want to fire up some Mountain or Skynyrd... hell, any southern rock will do... and pick up Excite Truck at launch. Curse you and your attractive feature set, Excite Truck