Recording is easy too. Tip: Reset all the gain sliders if you want to do a gain staging/ track balancing. Deleting and muting sections of audio is also a breeze. Volume automation is easy using the envelope. It’s by far the most popular free audio editing software. There are a range of effects and plugins, and it’s easy to use once you get used to it. You can multi track to an extent (have more than just one stereo track e.g. This is the godfather of free audio editing software. Which Audio Editor Do I Use? Audacity (Windows, Mac, Linux)
Audio MP3 Cutter Mix Converter (Android).