feat(archsetup): add loudgain-ffmpeg7, set mpd replaygain to auto

Add loudgain-ffmpeg7 (AUR) for ReplayGain/EBU R128 scanning.
Switch mpd replaygain from "track" to "auto" for album-aware playback.

3 files changed, 8 insertions, 1 deletions

diff --git a/archsetup b/archsetup
index 5015278..8867f6d 100755
--- a/archsetup
+++ b/archsetup
@@ -1969,6 +1969,7 @@ supplemental_software() {
     pacman_install mpd                               # music player daemon
     pacman_install mpc                               # mpd command line client
     pacman_install ncmpcpp                           # ncurses mpd client
+    aur_install loudgain-ffmpeg7                     # ReplayGain / EBU R128 scanner
     pacman_install opus                              # opus audio codec (all music in opus format)
     pacman_install wavpack                           # audio compression format
     pacman_install webkit2gtk                        # web content engine for GTK
diff --git a/assets/outbox/loudgain-ffmpeg7 b/assets/outbox/loudgain-ffmpeg7
new file mode 100644
index 0000000..5a8fa19
--- /dev/null
+++ b/assets/outbox/loudgain-ffmpeg7
@@ -0,0 +1,6 @@
+loudgain-ffmpeg7 (AUR)
+
+ReplayGain / EBU R128 scanner for FLAC and MP3 files.
+Used during music reconciliation to write ReplayGain tags (track and album gain)
+so MPD can normalize playback volume across different albums and playlists.
+Installed 2026-02-14.
diff --git a/dotfiles/common/.config/mpd/mpd.conf b/dotfiles/common/.config/mpd/mpd.conf
index d084cb2..89a5d76 100644
--- a/dotfiles/common/.config/mpd/mpd.conf
+++ b/dotfiles/common/.config/mpd/mpd.conf
@@ -367,7 +367,7 @@ audio_output {
 # See <http://www.replaygain.org> for more details about ReplayGain.
 # This setting is off by default.
 #
-replaygain			"track"
+replaygain			"auto"
 #
 # This setting sets the pre-amp used for files that have ReplayGain tags. By
 # default this setting is disabled.