MIDI does support non-Western music (was: Why can't i access /dev/dsp or /dev/snd on my XO)

[imm]

Ed Borasky was suggesting scala as a useful thing to have working in  
this regard...

Now, that got me wondering - I know it's freeware, but I'd never seen  
the source anywhere. Have I missed it somewhere? That is, is it open  
source?
I'd always (somehow) assumed it was closed source.
And if it is closed source (albeit freeware) does that put it "out of  
bounds" for this programme?