hi Rory! i'm putting together a presentation on procedural audio for Unity and i had somehow assumed that Cabbage and Csound were running a more commercial friendly license. i just happened to check on Cabbage's Github site and i found out that Cabbage has been marked as GPL. Csound is itself marked as LGPL which is not great but seems to be acceptable to Apple. i'm a little bit concerned as GPL is not a commercial-friendly license for things like the App or iTunes Store.
however it seems that since CsoundUnity isn't really using Cabbage per se, and you're instead loading Csound directly i'm guessing it falls under LGPL. it would be helpful to include a license with CsoundUnity so that it's clear it can be used in commercial games. i think as it is now if a lawyer saw no license they would assume all rights reserved. So it would be nice to get the clarification.