Version 2.1.1 fixes some important bugs introduced in 2.1, and a few other small items.

- fixed loop loading and playback freeze issues
- voiceover play area properly activates now
- fixed hung notes when using MIDI input with scale lock and you change key/scale, and when using simultaneous instruments on different channels
- updates loop display when deleting loops while stopped
- updated graphics for retina iPad

Details from 2.1 release:

New Features

• Allows background recording, when TJ is being controlled by other MIDI-enable software or hardware, records both the generated audio and the incoming MIDI.
• MIDI Thru mode option (translates scale lock mode if enabled)
• Added Instrument Mute option which silences instrument audio output (Sound->Volume), useful when using ThumbJam as a MIDI controller
• MIDI file export of active loops with 'Open In' in another app, or via email. Now puts all loops into a single Type 1 MIDI file, one track per loop.
• Now responds to MIDI bank and program change messages, to change the loaded instrument, or quick key/scale slot (see manual for details)
• Export/Import of user presets added (for backup purposes), accessible via Wifi Transfer interface
• VoiceOver support improved dramatically: on iOS5 you can now play the instrument on the main play area without switching out of VoiceOver mode. Sliders are now more accessible, properly announcing their name and value, as well as being swipe adjustable.
• Split multi-instrument presets can now be saved
• Can now specify category for user-created instruments
• Added options parameter to specify the concert A reference tuning in Hz

Bugfixes:

• Fixed 'button-of-death' that unexpectedly deleted all user data
• Fixed custom scale saving issues
• Fixed voice stealing when sustained
• Fixed various MIDI event sending buglets
• Fixed occasional loss of downloaded instruments
• Fixed issues with saving the MIDI files
• Fixed issues when other apps change the samplerate, was causing loops/instruments to be out of tune
• Fixed crash with voiceover use on iPad
• and probably more....