Absolutely a MUST have feature. I too want to use iMini along with other ipad synth apps, not in the Tabletop environment. iMini desperately needs Omni on / off, MIDI recieve channel select. AND most importantly a 'Run Midi in Background On / Off. I use iRig Midi and a few other apps for Live Performance, and having iMini hog the midi and run on all channels in the background makes it virtually unusable for me, as when I switch to Garageband, or Nanostudio or whicher app I want the iMini cannot 'disconnect'. This really is a major yet basic requirement. other than that, having owned a Minimoog for most of my lofe, this app is amazing. The ability to have presets, delay / chorus, etc...and the ease of mapping / learning midi controls is fantastic. Its a KILLER app that I cannot use! Very very frustrating. Please implement this ASAP.