Thanks for the positive feedback.
I've actually started rewriting file handling by AmplituDS a bit today.
I'm hoping to make it possible to play larger (more advanced) songs in it that way.
And I might rewrite some other pieces of the game while at it. *pokes retrohead* Happy? ;p
And as for rts4ds, I'm currently working on displaying a huge amount of sprites (read: units) on it.
Might take some time before that's done... but it'll be worth it.
Also fixed the energy bar while at it by coincidence (looked glitchy in the screens, right?).