My platformer browser game project is almost complete, but I ran into an issue when exporting the game's beta version to browser. Only a few of the tracks (the first stage, the end credit song and a short song in the middle of a stage) play properly. Other songs stop playing after a few seconds or don't start at all. This also breaks events tied to the music (in a dream stage, the music switches between forward and and backward versions and the change should change the animations).
Any idea what might be causing this? I tried converting the tracks to OPUS files and reuploading them as that was recommended in another post, but this did not help. Sound effects seem to work normally. I've tested the game with two computers on Chrome. The game works properly when downloaded to computer or run on the editor.
Here's a link to the c3p file: drive.google.com/file/d/1dLXbaNS_7WI5bf9CIFxmMs-srPwDIY79/view
And here's a link to the game itself: arimotravels.com/wp-content/stimppaukkoforeverbeta/index.html
The game is in Finnish, but you can start the game by selecting "Uusi peli" on the main menu (press Space or Enter). You can also go to level select with the Konami code ↑↑↓↓←→←→BA :D