I just used the one click method to install the codecs, but it produced a dialog that I'm not sure what to do with:
View attachment 25935
Please advise.
As far as umplayer is concerned, I have no 3gp files...at least at this time. Is there any other reason to use it rather than VLC?
EDIT:
I went ahead and took a shot in the dark, and choose the option to change the repository location in both sets of choices, and it downloaded and installed 59 packages, without squawking about any problems, but I still couldn't get any videos to play in either VLC or Kaffeine. VLC squawked about not having the right codecs as it did in the first place, and Kaffeine showed the title of a selected video, but remained with a black screen with no audio.
I had slightly better success with audio files using Amarok, but it still couldn't play any .wmv or midi files. It popped a dialog asking whether to search for the plugin necessary, but it failed to find them.