fix pyo _fromArray t& pass audioDriver to pyo on Linux

1. pyo's `DataTable` class expects multichannel data formatted as one row per channel (rather than one column per channel, as PyGame seems to).  Hence the `.T` in `thisArray.T.tolist()`

2. passing `prefs.general['audioDriver']` to pyo on Linux allows using jack instead of portaudio (on my system at least, pyo works with jack but not with portaudio).