how? can i work with clip fades if this triangle synthhh doest convert my midi tracks

You can use a volume envelope on the audio track used by the Triangle synth but boucing any softsynth to audio is possible.

You need recorded midi on the midi track/select the midi/audio track the edit/bounce to track.

You do realize that this new audio track will default to a new track added at the bottom of the project track list. If you have a few tracks showing you would not see the added track.