Possible Duplicate: How do I resolve unmet dependencies? After trying to run a .M4A and a .MP4 (aren't they same thing?) I get a message saying I need to install extra codecs. When ...
The following packages have unmet dependencies: gstreamer0.10-ffmpeg: Depends: libavcodec-extra-53 (>= 4:0.7-1) but 4:0.7.2.1ubuntu2 is to be installed Depends: ...