How to Convert M4A Files to WAV Mac Files
Songs and other audio files can be stored in a variety of formats. These different ways of encoding a song can have the sound be either compressed or uncompressed (to limit the amount of disk space used). In addition, some programs can read only certain audio file formats. If you have a file that is in M4A format and you want to open it as a WAV Mac file, you need to use a program to change the file type while still keeping the audio file itself intact.
Things You'll Need
Download and install iTunes. While there are a number of other computer programs that are able to convert M4A files into WAV Mac files, iTunes is free and often is already loaded onto many computers.
Add the file to iTunes. Do this by opening the iTunes program and dragging the audio file onto the "Library" icon at the top-left corner of the iTunes window.
Click the "iTunes" menu at the top of the iTunes program and select "Preferences" to open the iTunes "Preferences" menu.
Clicking the "General" button and then the "Import Settings" button, which is located in the second part of the window. This opens the "Import Settings" menu.
Change the importing format. A pop-up menu will have loaded with different file types you can convert the song to. Select the ".WAV" format. Then hit "OK" to save the changes.
Select the songs (or other audio files) you want to convert, right-click, and from the mini-menu that appears, go to "Advanced" and select "Create WAV version."