FreeStyle provides three ways to hear a metronome while you record. Recording with the metronome is important because it ensures that FreeStyle’s measures and beats properly match what you play. You have three choices for a metronome sound: a standard click sound on the Macintosh speaker, a MIDI click produced by one of your MIDI instruments, such as a side stick sound on a drum machine or drum kit, or FreeStyle’s “Riff Metronome”.
FreeStyle’s metronome riffs are set up for a General MIDI drum kit. If necessary, you can adjust them for a non-GM device. Just open them in FreeStyle (using the Open command in the File menu), edit the notes, and save again as a standard MIDI file in the Metronomes folder.