Add mpv config with EBU R128 loudness normalization

Adds config/mpv.conf with af=loudnorm filter for consistent volume
across radio stations. No more manual volume adjustment when switching.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

CHANGELOG.md

@@ -1,5 +1,10 @@
 # Changelog
 
+## 2026-04-07
+- Add `config/mpv.conf` with EBU R128 loudness normalization (af=loudnorm)
+- Consistent volume across all stations — no more manual adjustment
+- Update README with mpv config instructions
+
 ## 2026-04-06
 - Sort stations into logical sections with comment headers (News, MSM, Public Radio, European, Campus, SomaFM, Radio Paradise, Ambient, Music, Ontario)
 - Add Monocle 24 (London) — 24hr speech radio from monocle.com (http://radio.monocle.com/live)

README.md

@@ -76,12 +76,19 @@ cp stations.csv ~/.config/pyradio/stations.csv
 # or symlink it
 ln -sf "$(pwd)/radio-stations/stations.csv" ~/.config/pyradio/stations.csv
 
+# optional: use the mpv config for volume normalization
+cp config/mpv.conf ~/.config/mpv/mpv.conf
+
 # launch
 pyradio
 ```
 
 all streams are direct (icecast, HLS, shoutcast, .pls) — no youtube, no wrappers, no auth needed.
 
+## mpv config
+
+`config/mpv.conf` includes EBU R128 loudness normalization (`af=loudnorm`) so volume stays consistent across stations. copy it to `~/.config/mpv/mpv.conf` or merge the `af=loudnorm` line into your existing config.
+
 ## license
 
 public domain. listen to good radio.

config/mpv.conf

@@ -0,0 +1,9 @@
+[pyradio]
+volume=50
+
+[default]
+ytdl-format=bestaudio/worst
+no-video=yes
+
+# EBU R128 loudness normalization — consistent volume across stations
+af=loudnorm=I=-16:LRA=11:TP=-1