Always good to see new o/s music scoring/playing systems. What advantages does Alda have over Lilypond + something like Frescobaldi? Lilypond is an immense mountain to climb for alternative systems.
http://lilypond.org/
I hadn't actually looked at Lilypond until just now. Seems like it has a lot of extra features (clefs, time signatures, lyrics, etc.) that Alda doesn't have yet. Maybe I'll look more into it in the future.