ref: 94d2ee527af44610a498d6f6adbba8f0b6d76f17
dir: /rc/bin/dmus/
#!/bin/rc
if(test -f /mnt/wad/genmidi)
c=(games/dmid '|' games/opl3)
if not
c=(games/midi -c)
if(~ `{file -m $1} audio/mus)
c=(games/mus '<' $1 '|' $c)
if not
c=('<' $1 $c)
eval $c