A new approach of importing M4A to Audacity is converting M4A to MP3, OGG Vorbis, WAV, and other audio formats supported by Audacity. To this end, you need a good audio converter. WonderFox HD Video Converter Factory Pro is a mighty video audio converter, and it supports almost all video/audio inputs and 500+ output formats and profiles for devices. So it can help you convert M4A to MP3, M4A to WAV, M4A to OGG, and so on effortlessly. Of course, if you need to edit your audio files, you can make use of its editing features to merge, cut, and split your video and audio files.