#!/bin/sh

# tnx Fruit

# ReplayGain= Track
# i never listen full albums

# http://www.replaygain.org/

# debian packages
#  vorbisgain (0.37-2)
#  mp3gain (1.5.2-r2-2)

find -iname \*.mp3 | \
 sed -r 's,/[^/]+$,,' | \
 sort -u | \
 while read -r d
 do
    mp3gain -p -s i -T "$d"/*.mp3
 done

# vorbisgain knows how to do recursion, knows directories are albums
# music@bruhat:/srv/audio% vorbisgain -p -a -s -r 199902