\o/ yay.
I have managed to repurpose an old Galaxy S7 with #lineageOS23 thanks to this hoopy frood: https://github.com/flo2theO/Samsung-Galaxy-S7-Lineageos
The Android 8.0.0 that was on there was refusing to allow #syncthing (#syncthingFork really) to store a large (200GB) shared folder on an SD card. The shared folder being my #mp3 #music collection, which I'm switching back to because all #streaming services suck.
with the excellent #folderplayer for playback: https://folderplayer.com
(for those of us who already have a folder-curated collection)
#musicbrainz for laptop side curation and tagging
#syncthing for syncing.