Porl, linux-audio peoples, A SCALA scale library interface would be a fantastic idea....I did something like this as an exercise in Python for turning SCALA .scl files into tuning dump commands for fluidsynth (even though SCALA itself has fluidsynth scale output :) ) One could use regex statements to parse the header, and have some case switches to determine if the line in the scale 'body' of the .scl file was a ratio, or value in cents, etc. The synth engine would work with the final array of frequencies that were spit out into a MIDI-key indexed array.... I think this would be the easier part. The harder part, and where I think I'd need help, is integrating such functions into an existing audio architecture, plus integrating new GUI dialogs and menus into the same...it might take a whole to figure out if other things get broken as a result...I'm thinking for instance of envelope scaling being related to absolute pitch in HZ instead of MIDI note numbers. I haven't dug deep enough into the 'whysynth' code to see, but such things might need to be redesigned, and it might take time to work out any side effects of shoving SCALA interface code into the mix....maybe if Sean Bolton is on the list here, he'd have some insight into how to best fit things in with his existing code.... Perhaps the SCALA interface library could have a modular template of GUI dialogs/controls/menus for the more popular libs like GTK, FLTK, KDE, TK, etc.? Anyway, I'd be happy as a pig in %^&* to see this in whysynth, and as a de facto standard library the same way jack is in any synth application now written. Best, AKJ http://www.akjmusic.com #my site (lots of music made with linux there!) http://www.untwelve.org #my project (microtonal/tuning-centric concert series ;) ) -- Aaron Krister Johnson http://www.akjmusic.com http://www.untwelve.org