Does anyone know when Harmonicdog will fix the problem of Multitrack App not playing back unless a microphone is plugged in? All the other recording apps I own have rectified this problem. Thanks.

You can buy a headphone extension and replace the trs male end with a trrs male. tip to tip, ring to first ring, sleeve to second ring, sleeve on trrs open. This will allow you to play a session. Good luck.

New version 1.1 has addressed this problem.