Just bought this for $30 using voucher code:
runturkeyrun
https://www.jriver.com/index.html
Was considering buying a license for Audivarna but put off by their insane pricing model. Seems that they think they can emulate Roon.
Quite impressed by the J River package so far although it is taking a while to index my (admittedly large) flac library.
Currently streaming some cool jazz from their radio stream.
I think the offer is valid for 7 days.