Okay, so I'm not sure if it's known and/or designed this way, but if you pop-out the JukeBox into its own window, map OnLoad music/sound effects won't change. I'm not sure if it doesn't for everyone, or just the person who has it popped out. I can't know for sure until I can get my players on today. To reproduce, open any map page that is suppose to have an OnLoad music playlist. Detach the JukeBox, move the Player's tab to another map, then after the page loads, move the tab back to the map page with the OnLoad music playlist. It works as it is suppose to when the JukeBox is embedded in the game window. Tested on Chrome Version 47.0.2526.111 (64-bit) OS X El Capitan 10.11.4 Javascript is enabled No anti-virus Only running 1Password extension