Unable to play MP3 files with mpg123

[Andrew Watts]

I suspect after some recent update, mpg123 stopped playing files.  I
get the following error message:

andrew at drbernice Music $ mpg123 20091006_ascom_bocachica.mp3
[module.c:138] error: Failed to open module coreaudio: file not found
[audio.c:180] error: Unable to find a working output module in this
list: coreaudio
[audio.c:527] error: Failed to open audio output module
[mpg123.c:779] error: Failed to initialize output, goodbye.

I noticed that in /opt/local/lib/mpg123, there is an
output_coreaudio.so; should this instead have been built as a .dylib?