Audio [Q] Touchless control (voice/waving) while audio book / music is playing

Is there some app that supports voice or gesture control of the currently playing audio, with simple commands like "back" and "forward"?

I listen to audio books while I drive, and I want to be able to have the phone to go back 10-30 seconds to re-listen to a specific portion, without taking my hands off the wheel. How can I do this?

I don't have a phone yet that I can run OpenMic+ or Utter (upgrading this month), so I'm worried that the audio book's own voice would interfere with mine. If voice isn't an option, is there some app combo that supports hand gestures?
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