Selfhosted

Have always preferred Emby. Have been running it for around 8 years.

Mpd + a frontend of your choosing, I prefer ncmpcpp, will run on just about anything and is remotely controlled through apps or ssh. Mpd is great when the server is physically connected to the audio output device. I use it to remotely control a speaker connected server that can also run Plex (because I prefer plexamp for streaming and syncing to my phone, other android devices, and smart speakers). They both look at the same directory of a collection near 30 years in the making with hundreds of thousands of files and a wide array of formats.

Honestly just in ~/Music and stuff I'd like to listen to on the go gets copied onto my phone.

I was going to try to host my music on Jellyfin, but I had an issue.

Since 2005 I’ve been curating my music collection with my old iPod that I still use.

I like my albums in release order so, with the iPod in mind, probably 80% of them are named [year] - [album]

Lidarr and Jellyfin won’t find them because of this and I don’t want to manually sort through 2000-some albums.

So I still use my iPod (20 years old next year!)

VM having a EXT4 disk on a ZFS storage.
Files are (usually) FLAC
Files are ripped from CD with Exact Audio Copy (EAC)
Alternatively they are bought or 'lent' out ;)
Files are managed by Lidarr. Jellyfin for atreaming.
On mobile I use Symfonium.

Navidrome for me. Installed via Yunohost.

Plex and Plexamp. I know the dislike for Plex here, but it works for me and Plexamp is a fantastic piece of kit which, in opinion is worth the lifetime sub alone.

I use Jellyfin with Finamp on Android/PC and the Jellyfin plugin for Kodi on my HTPC.

The Jellyfin plugin does movies/shows too and not just music but it handles music playback as well. For a dedicated music box I'm not sure if I would use Kodi for it.

Navidrome + MusicAssistant

I got 500 gb drive pcloud with my pia socket 5 proxy/ vpn and i can play music files in their app so i put my flacs there.

E:\mp3

Hosted with Jellyfin, for clients I use Symfonium on Android and Feishin on desktop.

Plex and PlexAmp

I currently host Navidrome, which has an okay web player. On Android I use "Tempo" (though it is unmaintained) to connect to it, and on Linux I use Tauon (though it has very poor playback). I could not find a native Linux client that is not buggy unfortunately, so I'm also on the lookout for better solutions! I'm not familiar with the device you are talking about but every client I tried supports MPRIS, which are the regular media controls that can be used via the playerctl command, so you should be able to hook things up that way.

Server: Gonic

Clients: Strawberry on linux/Windows, DSub on Android, Amperfy on iPad/macOS

~200 000, mainly flac, accessible everywhere

Plex + Synfonium

Also

Navidrome + Synfonium / Tempo

I'm trying out different things in prep to switch to navidrome. I'm impressed how lightweight it is and it hasnt required much work to fix up the library tags as most were already minimally tagged.

One I figure out a secure way to expose it behind auth I'll be able to switch over.

Its been a heck of a time trying to get forwardAuth working with Zitadel so I'm trying out Authelia

I use Jellyfin with FinAmp for Android. Even supports offline caching.

Navidrome, Feishin, Tempo.

Navidrome server, symfonium on android is amazing. I also use maloja and multi-scrobbler to caoture plays from multiple sources and keep a in-house record of my plays.

Plex Server + Plexamp.

emby and shares. emby unlike jellyfish can mount remote smb shares right in the webinterface. proxmox/lxc and jellyfin is a pain in the ass you do not want.