Hey guys, let me start by saying yes, I have aptrigga2 which is great for straight ahead sound replacing. Drumtracker was to help me sound replace my drums using a VSTi (Addictive Drums in my case). Unfortunately, I wrestled with that fuckin' program for hours lastnight and eventually gave up! It mistriggered a lot and with no reference guitar tracks or anything, it was a pain in the ass. Importing into Reaper sucked because the MIDI drums all started at different times etc. So basically, here's a way to do the same thing using JS plugins that are included with Reaper and will make for a much better workflow. In my example, I wanted to replace the snare, kick and three toms. I wanted to trigger Addictive Drums, so I could change the sound of each drum as much as I liked. First, create a new track which will hold your drum VSTi. Set its record mode to Record: Output (MIDI) and turn on Record Monitoring. Set its input to MIDI Input -> All MIDI Inputs and select a channel here (eg. 10). Right click on this track's I/O button and select Receives -> Kick (or whatever your kick track is called). Now go to your kick track and insert an instance of JS: Sstillwell/drumtrigger. Set the midi note # to the kit piece that needs to be triggered (in my case #36 for the kick) and select the MIDI channel it should output to (using the example above, it would be channel 10). Play the wave file through and change the open threshold and close threshold values until you hear the kit piece being fired in the VSTi. What you want is when the sound goes louder than the open threshold, the midi signal is on, and when it falls below, the midi signal is off. When that's sounding okay, place an instance of JS: MIDI/midi_velocitycontrol after the JS: Sstillwell/drumtrigger plugin. Play around with the velocity controls while listening to your track, adjust both plugins accordingly. This only took me a minute or two, I find that JS: Sstillwell/drumtrigger sends very low velocities, so I just increased the min velocity in JS: MIDI/midi_velocitycontrol. Repeat the process for each drum, ensuring to send each track to the track your VSTi is on. If you hear the odd mistrigger, don't worry - it's easy to edit it out later (I had to do much more editing within Drumtracker!) Once happy, rewind the track, and hit record. Once it's recorded the new MIDI drum track, mute your existing audio drum tracks and have fun from here! If anyone has any questions, please feel free to ask. Here's how my snare track looks: http://stashbox.org/364588/Drum Trigger using Reaper.png http://stashbox.org/364619/Editing Drums.png <-- Reaper 2.99 Alpha Preview 8 Digi.