Muse Interactive has released its Pocket Jockey game for iPhone and iPod touch. Described as a “full-body” horse racing game, Pocket Jockey encourages users to gallop to the beat of a song, and the closer they are to the beat, the faster their horse will go. To control the horse, the player can jump up and down while holding the device in front of them and flick the screen to whip the horse, bounce their legs after placing the device in…