I wouldn't do the Map section, considering they are going to be removed in v21 anyways.
V21 is an unknown amount of time away.
He could keep it up for now and then come V21 remove it, giving the OP more room.
For the music the OP should include the fact that it requires a mono .ogg vorbis file.
I roostered up for ages in just trying to test if I can put music into Blockland because for the longest time I kept forgetting it needs to be mono.
I was making a stereo .ogg so it wouldn't work.
Also, perhaps a suggestion on any tools that could be used?
Preferably free but you could list one's that require payment.
For example,
Audacity is quite good for when making music loops.