We already have custom image uploading.
But where custom sounds?
Plazma burst is good, its true, but these sounds are boring.
I suggest to add custom sounds (like as custom images)
People will upload sound ~10 mb, 40 - 60 seconds max.
Moderation check copyright and unapporative content
If its not found sound file will be approved.
And everyone can play it in level editor
(Note: its NOT a custom songs, i mean FX)