Launch the application. If it is your first time, you will likely be greeted by a prompt to log in.
You can manually retrieve your ARL from a desktop web browser (Chrome, Firefox, or Edge) by following these steps: Deezer account in your browser. Open Developer Tools by pressing or right-clicking anywhere and selecting Navigate to the Application tab (Chrome/Edge) or tab (Firefox). In the left-hand sidebar, expand the section and select deemix gui arl
Go to Settings: Find the settings menu within Deemix. There will be a field labeled "User ARL". Launch the application