This will be sort of a follow up to this thread. There doesn't seem to be any official info or article with instructions on how to make the Transport Buttons on the MK3 (Play / Stop / Loop / Foward / Back) work in Ableton Live while the MK3 is controlling Maschine Software Plugin so I decided to make a custom Live Remote Script. This can be helpful for anyone not familiar with custom MIDI Mapping and has the advantage of working for previously created Live Projects. (Works great here, let me know if it works for you guys.) Download the Custom Remote Script here. Installation instructions: Spoiler: Mac 1 - Make sure Ableton is not running. 2 - Extract the contents of the Zip File, select the extracted folder named "maschine_mk3_transport" and copy (CMD+C) 3 - Open your Applications folder and right-click the Live application symbol. In the context menu, click on Show Package Contents. 4 - In the Ableton Live package, navigate to Contents > App-Resources > MIDI Remote Scripts. 5 - Paste the folder "maschine_mk3_transport" extracted in step #2 (CMD+V) Spoiler: Windows 1 - Make sure Ableton is not running. 2 - Extract the contents of the Zip File, select the extracted folder named "maschine_mk3_transport" and copy (CTRL+C) 3 - Go to the MIDI Remote Scripts folder in Ableton Live's installation directory. By default, it is located here: C: > ProgramData > Ableton > Live 9 / 10 > Resources > MIDI Remote Scripts. 4 - Paste the folder "maschine_mk3_transport" extracted in step #2 (CTRL+V) Configure Ableton Live to use the Custom Remote Script: 1 - Open Ableton Live's Preferences and go to the Link MIDI Tab. 2 - Assign a free Control Surface slot to "maschine MK3 transport" by selecting it from the drop-down list. 3 - Select Maschine MK3 Virtual Input on the MIDI Input tab and Maschine MK3 Virtual Output on the MIDI Output tab. (Under windows I have no idea what the Virtual MIDI port name is or if Maschine auto installs one by default or not, you may need to use an external Virtual MIDI app) Controller Editor: Open the app, from the factory templates load "MCU Transport" and make sure it's selected. Enable Host Transport Control and close the App. Hopefully, that works. Spoiler: Button function description: If for some reason anyone needs a remote script with custom CC values to work along-side their own CE templates just let me know.