Can someone please advise as to the correct  to invoke -Ma (= 
multiple MIDI controllers) under ALSA (Linux)?

I've tried the following (and *many* variants involving -M hw:x,y) without 
success:
-odac -+rtaudio=alsa -+rtmidi=alsa -Ma

The log states (or similar):

ALSA lib rawmidi.c:282:(snd_rawmidi_open_noupdate) Unknown RawMidi a
ALSA: error opening MIDI input device
 *** error opening MIDI in device: -1 (Unknown MIDI error)

I very much hope that the -Ma option is not limited to PortMidi. The only 
MIDI option in SoaS (Sugar-on-a-Stick) is ALSA. (Its pulseaudio option 
doesn't include MIDI.) I need the multiple controller option.

FYI: for a *single* MIDI device, the standard format -M hw:1,0 works fine. 
(We're making progress.)

Art Hunkins



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