Set up mpd, continued
Configure mpd (music_directory, null driver, ...)
MPD's config file is /etc/mpd.conf:
Change "music_directory" to point to your music directory.
Change the audio_output section for "ao" to include:
driver         "null"
driver_options "period_size=50000;use_mmap=true"
format         "44100:16:2"
I also uncommented this line:
audio_output_format             "44100:16:2"

I use the null driver for "ao" because I do not have a sound card in my
mpd server.