This is two ideas for the mailcap of mpg123,

- Run mpg123.bin to be sure of getting the mpg123 program in case
  update-alternatives has selected something else (like mpg321).

- Run "-C -v" when on a tty for interactiveness.


# "mpg123 -C -v" for keyboard controls and progress line on a terminal.
#
# "mpg123 -q" quiet when no tty.  In this case read stdin since that
# might let run-mailcap or similar pipe straight in, no temp file.
#
# ENHANCE-ME: Should have test="..." in these entries so they're only
# used if audio output is possible by mpg123's configured or selected
# methods.  That might mean user in the "audio" group, or jack daemon
# running, etc.  Would playing an empty mp3 be a good enough test?
# Perhaps mpg123 could help by some sort of "mpg123 --test-output".
#
audio/mpeg; /usr/bin/mpg123.bin -C -v '%s'; needsterminal; description="MPEG Audio"; priority=5
audio/mpeg; /usr/bin/mpg123.bin -q -; description="MPEG Audio"; priority=5