They may look the same, but you can right-click on the file and select Get Info to view the file format of each.
When it's done, you'll have two versions displayed one after another. ITunes will go ahead and convert that file to MP3. If, for some reason, that option is not enabled when you right-click on a song's title, you can access it by going to File, then Convert, and then Create MP3 Version. You can right-click on a song title to access the Create MP3 Version option from the drop-down menu. If you have a large number of files, use the search function to find what you want. The iTunes library will automatically update all the songs it finds on the computer. Find the Song You Want to Import in the Library To change WAV to MP3 on a Mac, on the Preferences pop-up window: Move your cursor on top of the menu bar, click iTunes, and from the drop-down menu, click on Preferences. The first step of converting WAV to MP3 on a Macintosh would be to open iTunes. If you happen to have uninstalled iTunes before, it's time to reinstall it using the App Store or directly from the link below. There are just a few simple steps to follow. ITunes converts WAV to MP3 on Mac easily.