I have bought a normal licence for JRiver Media Center Version 23 (Windows), after I had previously bought a licence for Version 21. Because the Version 24 was released a few time after that purchase date, I could update to 24. Now my version was deactivated. I had to re-install Version 23 but lost round about 20 CDs I had ripped before. That was a reason to update now to 24 to regain my old entries, which I couldn't save by the zipped libraries. I had to pay $26,98 USD and got a Media Center 24 Version. According to my Paypal Invoice I have ordered a 25 master licence. Instead I am working with a 24 Version. When I want to upgrade I have to pay anew 19.98 $.