I’ve made a Pure Data (Pd) patch that receives OSC messages from an iPod Touch or iPhone running Mrmr:
You can turn these signals into MIDI if you like, then use MidiPipe (in OS X) to send it on to any music program you like. Remember too that this is Pure Data, and we’re not limited to only audio control; we can use it to control video, generative visuals, or a remote control machine gun art installation.
Have fun, but not too much fun!
Three of them will retail for $5, and the book about bears $8. They can be found at STICKY, Flinders Lane, Melbourne, Australia. Available in editions of 1.