Standalone Synology package. It carries its own Python, its own
libraries and its own ffmpeg/ffprobe/fpcalc, declares no package
dependencies, and runs as an unprivileged service account.
Install: Package Center -> Manual Install -> select the .spk.
One step afterwards: DSM does not let an unsigned package grant
itself access to a shared folder, so give the cadenza account
access to your music: Control Panel -> Shared Folder -> Edit ->
Permissions -> switch the dropdown to 'System internal user' ->
tick cadenza -> Save.
You choose the username and password the first time you open it;
nothing is generated and there is no default credential.
third-party-source contains the corresponding source for the
bundled LGPL binaries.
Full history: CHANGELOG.md