Disable password chaning but enable player selection

[SpecialTrooper]

Hey, I was just wonderning: I don't want users to be able to change their password, but they should be allowed to select the method of plaing (Online, Lokal with Playlist...). How can I do that?

Another question: How can I prevent that users always create new players automatically without even choosing to do so?

Or a Feature I would need is a additional Function in the ...More Actions Menu, which creats a m3u file of the songs in the playlist and gives it as a download. So I wouldn't have to switch to another player all the time if I want to play music lokal.
Hope you can help me

SpecialTrooper