Create a release by clicking on the "New Release" button on the track detail page of the track you want to release, or in the Releases section of your account.
Keep in mind that you can only release a track that's been uploaded to LANDR in WAV (44.1kHz/16bit).
To release a LANDR master, be sure that you have the master available in your track library as a WAV. If you don't, you'll need to purchase it before releasing the master.
As a freemium LANDR user, you can try releasing for free a couple of ways.
Read our release guidelines for help with getting your release ready.