If you are Windows users and have quantities of audio files scattered in your Windows 10 local disk, it'd be better for you to pick up some of those separate audio files and join them into one single file. Photo by: whathifi How to Combine Audio Files on Windows So here, we will talk about 5 easy ways to combine audio files on the desktop. Or you may have more needs for the audio files merging. When you have a call for joining separate music tracks together and make it your own music video, to combine audio files will be your first move. When it comes to the question of how to remix the music, the first step is to combine audio files.