IK Multimedia has released DJ Rig for the iPhone and iPod touch, a new pro-quality DJ mixing app designed to complement the company’s iRig Mix mobile mixer. Debuted at CES 2012, DJ Rig provides a full-featured double-deck DJ mixing app for the iPhone and iPod touch that allows users to instantly play and mix songs from the device’s music library. Features include automatic tempo sync and beat matching, sample-based pads and performance…