Make sure music files are not 00:00 length, instead of using Construct 2 event for Music Play Try this out,
- Add Browser instance in Game,
- Add an event of Execute JavaScript at that required location where you want to play that Audio.
- Write this event into it.
"var sound=new Audio('media/sound.mp3');sound.play();"
change the URL as per your requirement.
Media is the Folder and sound.mp3 is the file name.
Do let me know if this works.
Btw checked your game, Its amazing. Loved it.