Not really a problem, more a question XD
with the new patch, you can add music to your map without it being connected to an object.
I added a music file at my map and on my pc it's working fine.
Now I exported that map for testers, but they don't here the music.
the music file wasn't in the download, so I suppose you also need to add the music file in the download?
that it not get exported with the map?
if so, do you need to place the music in export or the sound folder?