oampo/Audiolet — pull request #40 by catshirt (2012-09-08 00:30:05+00:00)
Title: adding midi control groups

this is in reference to issue #38. i couldn't wait so i went ahead at a first pass. i hosted examples of the [basic midi control](http://catshirt.net/Audiolet/examples/midi-control/index.htm) and [an arpeggiator](http://catshirt.net/Audiolet/examples/arpeggiator/index.htm).

i did realize too late, that both instrument and arpeggiation control groups really only make sense with some frequency lookup, which would be made much easier with something like music.js. for now- the notes are all just relative frequencies with no math behind them.

so there's a few minor issues, but i figured i'd get your feedback before moving forward.

thanks!