Problems with custom key map

Hello there,

I'd like to specify my own key bindings. But when I set a command to a key that is already used by another command, I'm getting an error like this:

FATAL_ERROR: Key x is defined for go and toggle_mixer

So I remove the line "toggle_mixer = g" from my keymap file. But I'm getting still the same error message.

So my question is: How can I completely unbind the command "toggle_mixer" (or any other command I don't need) from every key?

I know, I could simply bind "toggle_mixer" to some key I don't use and forget about it. But I think it's silly to think out key bindings for commands I don't want to use at all. It would be great if there was some functionality like "unbind all keys".

Besides this, MOC seems to be a great player. Thank you very much for your good work.