When you insert Forte(or any softsynth) select First Synth Audio Output or All Synth Audio Outputs(if the synth has multiple outputs).
This will create audio tracks that are automatically linked to your synth.
Also, in your settings,make sure NO options are selected in MIDI Outputs.
DO NOT insert any other synths in your project.
If Forte is the only synth available, the MIDI track outputs will default to Forte.