This article will show you how you can broadcast from another audio application over Mixlr by using Mixlr AudioLink, an audio device that is installed when you download Mixlr.
Output your audio from your audio application
Firstly you will need to set the audio output on your audio application to Mixlr AudioLink. You can usually find this option under Preferences or Options. This might not be referred to as the audio output in your application - it may also be labelled 'speakers', 'playback', 'air output' (for radio scheduling applications), 'master output' or something else. If you haven't updated this before it will probably have your speakers currently selected here.
Locate this in your audio application and change it to 'Speakers (Mixlr AudioLink)'.
If it's not possible to select an audio output for your audio application see this article on how to broadcast your desktop audio.
Input your audio to Mixlr
Next, open the Mixlr desktop app. Click the arrow by 'Select Source' for other channel 1 or channel 2 (the Mic and Any Input channels) to bring up the list of input options.
Select 'Mixlr AudioLink > Channels 1 and 2' from the list.
Mixlr AudioLink connection set up
When Mixlr AudioLink has been selected you will see it listed as the input for this channel, where 'Select Source' was previously displayed.
If there is an audio signal being sent from your audio application you'll see the visual display indicators for the channel lighting up - these are the white lights showing up in the image above.