HOW TO USE 1. Click "See inside". 2. Go to the sprite named "ICON". 3. Click on the "costumes" tab. 4. Replace the template with an image or drawing of your choice. For music: replace the sound block with your music. Around 0.30 seconds is best. Longer is generally better that shorter.
LawsOfScienceChanger and Jay-Tv are the ones who did all the work. I merely combined the two. It also goes forever.