Export Audio (Bounce To Disk)

Click the Cassette Tape button on the transport bar in order to arm Synfire for audio export. Press Play to start the playback. Audio output is now saved to disk. When playback has finished, you need to press Stop to close the exported file (otherwise it will continue capturing all audio output).

You will find your exported audio file next to the arrangement. Open the folder with File > Show in Finder (or: Explorer).
Important: All instruments must be hosted by a single Audio Engine for this to work.