PREIN

/bin/sh

/usr/share/rpm-helper/add-user mpd $1 mpd /var/lib/mpd /bin/false 
usermod -g audio mpd

PREUN

/bin/sh

/usr/share/rpm-helper/del-service mpd $1 mpd

POSTIN

/bin/sh

if [ $1 -eq 1 ]
then
/usr/share/rpm-helper/create-file mpd $1 /var/lib/mpd/mpd.db mpd audio 644 
/usr/share/rpm-helper/create-file mpd $1 /var/lib/mpd/mpdstate mpd audio 644 
/usr/share/rpm-helper/create-file mpd $1 /var/log/mpd/mpd.log mpd audio 644 
/usr/share/rpm-helper/create-file mpd $1 /var/log/mpd/mpd.error mpd audio 644 
fi
#echo If you want to run mpd as a service, please read
#echo /usr/share/doc/mpd-0.12.1/README.MDK
/usr/share/rpm-helper/add-service mpd $1 mpd

POSTUN

/bin/sh

/usr/share/rpm-helper/del-user mpd $1 mpd