Hey there, I know this is many years later and you've moved onto a new version, but I just wanted to report that I get no audio at all on the NDS version.
Thanks for your report. This is now implemented in r69, see the devlog for details: https://thp.itch.io/loonies-8192/devlog/1089275/loonies-8192-r69-for-nds-now-wit...