You can easily set up your devices in studio one. Run the studio one. You should now on the start page of the studio one. There you can see the recent files, news feed etc. Now studio one automatically select an audio device that are connected to the computer and that is displayed in the start page of the studio one. If you want to change the selection, click on the configure audio device link which is on the start page and select the device in the drop down menu of the audio device. Now click on the configure external devices link located at the start page. Now click on the add button. Now there you can choose the device or click on new keyboard and name it. Now select the sources of the MIDI and select default instrument input and click ok.