The mp3 radio downloads that use MPlayer.

[bat guano]

> What, if any, is the version of ffmpeg packaged for your system?
>
No idea. Ubuntu 11.04 is no longer supported.

But although I see the red errors:-
"Application provided invalid, non monotonically increasing dts to muxer in stream 0"

The file does mux OK as with Vangelis.
The resulting mp3 file seems OK.

So maybe it is just a matter of switching off or reducing the loglevel like you said.