We are working on an update which should be submitted to Apple next week that will include amongst other things:
A record to MIDI facility this enable:
Export all layers into individual tracks in a MIDI File
All Note on and Note OFF
Volume and Pann for the track
Volume, Pan, Cutoff Frequency, Resonance Controller date will also be exported.
It will capture output of the sequencer and live performanced which can be retreived via ftp for use with external programs.
I am also in the process of comparing the three versions of Aurora I have. On Windows Mobile, iPhone and iPad. I hope to have the comparison available soon.