Ah, thanks for playing! Yeah, audio was a shame... It'll still work on the downloads for Windows/Linux, but I really think it was some export bug on Linux specifically. We didn't use anything particularly special for audio nor did we select anything other than defaults (at least, I didn't find a "Disable all audio for export" HTML5 option after taking a second look haha). At least the visual effects I tried to add for the audio make up slightly for it!