myMPD uses GNU standard installation directories.

DIR / FILE DESCRIPTION
/usr/bin/mympd myMPD executable
/usr/bin/mympd-script mympd-script executable
/var/lib/mympd/config/ configuration files
/var/lib/mympd/covercache/ directory for caching embedded coverart
/var/lib/mympd/pics/ directory for stream coverart
/var/lib/mympd/pics/<tagname>/ Pictures for e.g. AlbumArtist, Artist, Genre, ...
/var/lib/mympd/state/ state files
/var/lib/mympd/smartpls/ directory for smart playlists
/var/lib/mympd/ssl/ myMPD ssl ca and certificates, created on startup
/var/lib/mympd/scripts/ directory for lua scripts
/var/lib/mympd/empty/ empty directory
/etc/init.d/mympd myMPD startscript (sysVinit or open-rc)
/usr/lib/systemd/system/mympd.service systemd unit
/lib/systemd/system/mympd.service systemd unit