Custom User Profile Fields acting weird

[Emeralda]

I've set up a custom profile music player, so members could put their favourite tracks as, well, their profile music. Then someone requested the ability to pick whether it should be autoplayed or not, so I made this (autoplay=1 OR 0):

http://prntscr.com/647wj http://prntscr.com/647u4

And this is where I encountered 2 problems. First, it didn't want to switch to 0, or rather, it didn't want to save it. Second, even after making 1 the default value, it wouldn't work until the settings were first saved.

It works when I do it like that http://prntscr.com/647wa but it's still quite disheartening.