ENH: beginning of work on pyo sound outputs
ENH: SoundPyo class does now play a sound from note name/array but doesn't end
ENH: testing pyo server and shutdown
ENH: sound.Server (subclass of pyo.Server) now successfully auto-shuts down
ENH: basic sound reproduction (wav files and numpy arrays) working from pyo
ENH: preferred sound libs can now be set in preferences>general>audio
Merge branch 'feature-pyo'
BF: PreferencesDlg handling string->list conversion better