@fae alrights,
i think the general soundtrack mood i'd had in mind was unworried, wistful, mostly positive, adventurous but steady and casual? the characters are supposed to be kids who are partially goofing around if that helps with getting ideas or insight.

(i don't really understand genres unfortunately ><)
for format, you mean file format right? any standard mp3 wav ogg should be fine, i've got audacity to convert it if my game software is picky.

is that, does that tell you what you need to know?