Audiobus: Use your music apps together.
What is Audiobus? — Audiobus is an award-winning music app for iPhone and iPad which lets you use your other music apps together. Chain effects on your favourite synth, run the output of apps or Audio Units into an app like GarageBand or Loopy, or select a different audio interface output for each app. Route MIDI between apps — drive a synth from a MIDI sequencer, or add an arpeggiator to your MIDI keyboard — or sync with your external MIDI gear. And control your entire setup from a MIDI controller.
Download on the App StoreAudiobus is the app that makes the rest of your setup better.
Controlling fx with a foot pedal
Hey, I'm a cajon player and I've recently discovered processing my cajon live with fx like turnado and Live FX (like this 
) but since that video my needs have expanded somewhat - i need to be able to play freely and control fx without using my hand - is there a way I can setup a Behringer foot pedal or similar to control fx with my feet? I'm using an itrack dock for sound so there's a USB midi port if that would help...
Comments
Sure but you're going to need a way to get MIDI into the iOS device. If you don't want to switch interfaces, you might try one of those Yamaha DIN MIDI to Bluetooth MIDI converters.
Then it's just a matter of MIDI mapping from your pedal of choice to your control of choice. If you go with the FCB1010, definitely check out Secret Base Design's FCB1010 app. That pedal can be a monster (in both good an bad ways!); that app helps tame the bad monster bits.
Would the USB midi in not work?
Not with the FCB1010 since it's DIN MIDI only. There are other MIDI pedals though that output MIDI over USB. Check out the KMI SoftStep or 12-Step for a start.
Itrack doesn't supports midi2usb (class compliant) cables?