With CASTER it is simple and FREE to record your desktop audio.
Open CASTER, your first track (sticky track) is automatically assigned as “Desktop audio” input.

Now, all your desktop audio will go through CASTER, you can monitor it through this track.
To record the audio, just hit the record button here:

Recording settings #
To change the default audio format (mp3, 256kbps) click on the cog wheel icon, here you can set your preferred audio format, quality, and resolution. You can also choose to record pre or post-plugin inserts.

To browse your recordings, click on the folder icon. This will open the file location in your file system – recordings are sorted by date and time subfolders.
If you wish to record only one app’s audio (and not the entire desktop audio), Just switch the first track input to your preferred app.
