@dorobo: More functions considering sound are in planning, but that needs some time. Just so I know, what would you need ? Just more tracks ?
When it comes to sound and music, a lot of things could be usefull, if you need some ideas :
- as you mentioned, having the possibility to have muliple tracks (each with their own volume "settings") playing would be great.
- having some basic controls over it (pause, resume, start at a specific time of the track etc ...)
- some "on the go" manipulation. adding effects (bass / trebble , reverb, balance etc ...)
- I also came across a software (can't remember its name, will have to look it up) that could be paired with game engines for enchanced sound manipulation. Some integratiion of the sort (like what you did with spine) would be great too.
(I realise some of those suggestions are pretty big and, if they were to be implemented, could not be expected anytime soon).