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+---
+date: 2021-11-29T22:45
+tags:
+  - timeline
+  - software
+  - notes
+---
+
+# a self-hosted podcast playback station
+
+## components
+
+### hardware
+
+- raspberry pi 3
+- wired speakers
+
+### software
+
+- [raspberry pi os](https://www.raspberrypi.com/software/)
+  - packages:
+    - `python-pip`
+    - `libglib2.0-dev`
+    - `libxml2-dev`
+    - `libcurl4-openssl-dev`
+    - `libid3-3.8.3-dev`
+    - `vim`
+- [`mopidy`](https://mopidy.com/)
+  - extensions:
+    - [`mopidy-m3u`](https://docs.mopidy.com/en/latest/ext/m3u/)
+    - [`mopidy-local`](https://github.com/mopidy/mopidy-local)
+    - [`mopidy-musicbox-webclient`](https://github.com/pimusicbox/mopidy-musicbox-webclient)
+    - [`mopidy-mpd`](https://github.com/mopidy/mopidy-mpd)
+    - [`mopidy-stream`](https://docs.mopidy.com/en/latest/ext/stream/)
+- [`castget`](https://castget.johndal.com/)
+
+## general setup
+
+1. set up headless raspbian, connect wifi, set up user acct, and podcast dir
+```bash
+sudo raspi-config
+mkdir -p /home/pi/podcasts/{playlists,podcast1,podcast2,podcast3}
+```
+2. [install `mopidy`](https://docs.mopidy.com/en/latest/installation/debian/) +
+   extensions (see links above for installation info)
+```bash
+# edit /etc/mopidy/mopidy.conf
+[local]
+enabled = true
+media_dir = /home/pi/podcasts
+scan_timeout = 10000
+
+[file]
+enabled = false
+
+[http]
+enabled = true
+hostname = 0.0.0.0
+port = 6680
+
+[mpd]
+enabled = true
+hostname = 0.0.0.0
+port = 6600
+
+[logging]
+verbosity = 1
+
+[m3u]
+enabled = true
+playlists_dir = /home/pi/podcasts/playlists
+```
+3. compile and install `castget` (see link above for installation info)
+```bash
+# edit /home/pi/castgetrc
+
+# note, the keys in this config should correspond with the podcast dirs
+# created in step 1 above
+
+[podcast1]
+url=http://url.to/podcast1
+spool=/home/pi/podcasts/podcast1
+filename=%(date) %(title).mp3
+
+[podcast2]
+url=http://url.to/podcast2
+spool=/home/pi/podcasts/podcast2
+filename=%(date) %(title).mp3
+
+...
+```
+4. create `sync.sh` script with the following content (ymmv, use at your own
+   risk):
+```bash
+#!/usr/bin/env bash
+
+set -e
+
+# fetch podcasts
+/usr/local/bin/castget -C /home/pi/castgetrc -1 "$1"
+
+playlist="/home/pi/podcasts/playlists/$1.m3u"
+files=(/home/pi/podcasts/$1/*.mp3)
+
+# remove stale playlist
+if [ -f "$playlist" ]
+then
+  rm "$playlist"
+fi
+
+# build new playlist with newest entries _first_
+for (( i=${#files[@]}-1; i>=0; i-- ))
+do
+  fp="${files[$i]}"
+  fn=$(basename -- "$fp")
+
+  # next, we'll make these all relative fps
+  quoted=$(python -c "from urllib import parse, sys; print(parse.quote(sys.argv[1]))" "$fn")
+  echo "local:track:$1/$quoted" >> "$playlist"
+done
+
+sudo mopidyctl local scan
+```
+5. add cron jobs
+```bash
+5 * * * * /home/pi/sync.sh podcast1 >> /path/to/podcast1.log
+0,15,30,45 15,16,17 * * * /home/pi/sync.sh podcast2 >> /path/to/podcast2.log
+0 0 * * 5 /home/pi/sync.sh podcast3 >> /path/to/podcast3.log
+```
+6. add any additional internet radion streams into one or more playlist files
+   in `/home/pi/podcasts/playlists`.
+7. enjoy!