Use APKPure App
Get zRadio Unlocker FREE old version APK for Android
This will remove all restrictions from zRadio, for free.
You can still buy the paid unlocker if you want, for support. If I one day continue work on zRadio, those who have bought the paid unlocker will get unrestricted zRadio even then. But in any case for now with this free unlocker you can get all functions of zRadio.