[no subject]

> Finally: When I select "edit MIME types", nothing happens. do I have to
> set some path or the like? Hence gmc won't care about mimes, each time I
> for example double click an mp3 it asks me with which app to open it.  
> In the end this comes down to no mimes at all in gmc.

There are two problems here - the MIME editor that gmc is trying to run is 
missing and gmc doesn't report the failure.

I guess (well, I know I shouldn't be guessing but I have time to
"interrogate" you) that you are running GNOME 1.4.  It has a separate MIME 
editor in the control panel, which is not compatible with gmc.

-- 
Regards,
Pavel Roskin