Currently we are working on scrumbling out music engine from ZX-7 editor (8 channels from BEEPER) and using it in your own games or demos.
In this case we all could have such tunes (like this new song in style of "Power Pyramids" / "StarTip2")
easily in own programs and for now it was impossible because author of ZX-7 hasn't made required compiler/player. He wrote in some article on the beginning of 90s that he had some troubles with fitting music and its procedure in RAM.
For now we managed to scrumble out one song from the editor and it works without it, in BASIC, without problems.
Also XXL added a "loop" mode, which wasn't originally in the editor and it was big inconvenience.