Appimage with wrong playlist file, so music doesn't play

[brian-stovall]

Thanks for all your work preserving these great old games!

I noticed that kichikuou_en builds (haven't checked others) don't have an appropriate playlist file. Rather than pointing to the relative location of the bgm folder, they point to:
/nas/Downloads/Kichikuou Rance/bgm/filename.mp3
I tried changing these entries to read
./bgm/filename.mp3
and rebuilding the appImage and it works as expected.

I didn't dig around to see if this script was generating the directories incorrectly, but thought I'd let you know. Can do more research if you are busy and maybe even make a PR.