@mocambo I had to go away for a while, but have picked up Otter's development again.
Sorry for getting to this so late, I have been away for a long time.
Otter's development resumed about a month and a half ago, and we support radios, both the user's custom radios and instance radios (which solves the "shuffle all songs" use case).
If anyone has feedback on ideas, you are welcome to submit your idea on GitHub or come discuss on Matrix (#otter:matrix.org).
Server run by the main developers of the project It is not focused on any particular niche interest - everyone is welcome as long as you follow our code of conduct!