Confusing, yes indeed - this is BIAB after all smile. I fully agree that are a lot of potential options for configuration issues here. Midi is playing, it plays with a midi style or a real style. What is not playing is audio on a real track when you allow the midi style to auto substitute. Mario, your picutes do not show if there is any Audio on the Audio track which is what the objective is. My picture shows that I placed a RT piano on the piano track and there was no wave in the Tracks view. If I force the style to change to all RTs it works. Its the auto substituion which failes to switch to real tracks.

I am sure it is something simple here. grin


BIAB – 2026, Reaper (current), i7-12700F Processor, 32GB DDR4-3200MHz RAM, Motu Audio Express 6x6 - My SoundCloud.