We are currently in the process of uploading your MP3s into the new portal and your audio will be available soon. This means that some of your historic recordings may not appear until this has been completed.
If for some reason you cannot wait for your MP3 to be uploaded to the portal, you can add a file as a recording to your song. To do this, select 'Songs' from the main menu, on the left-hand side. Search for the song, then select it from the list. Click on the link '+add new recording', to the right of the 'Recordings' section.
If you have linked your Spotify account you can search for the recording in Spotify or you can upload an .mp3 file. Fill out the information as best as you can, then click on the 'add recording' button at the end of the screen.