SDRRadioLicenceKeys.xml contains a licence key for the version 1.5 console, this is good until the end of 2020.
Here's the file contents:
SDRRadioLicenceKeys.xml is here in a ZIP archive. Extract the file SDRRadioLicenceKeys.xml to the folder where the executable is installed, for example on a Windows 7 system this folder is C:\Program Files (x86)\SDR-RADIO.com .
Select Licence Manager from the ribbon bar's Help pane to see the current status of the licence. The important field is Expiration - after this date you cannot use the program.