You cannot turn a wav, aac, or aiff file into .mp3 format simply by changing the file extension. The file may be able to import and play in applications which inspect the internal structure rather than relying on the extension to identify the proper handler, but you won't make an mp3 file that is compatible with a third party mp3 player for example, that is only able to play valid mp3 files. Through the above steps, we can convert WAV to MP3. Besides, Renee Audio Tools supports users to transfer the audio files to iTunes. Here are the steps：. ① Open Renee Audio Tools and then click [ Transfer to iTunes ]. ② Then, click [ Add Files] and select the target file. Check it and click [ Add to iTunes] to add the file to iTunes. 2. Click the "File" menu. If you don't see the menu bar, press Alt to make it appear. 3. Select "Add File to Library" or "Add Folder to iTunes." When you select "Add File," you can add one or multiple files from a single folder. If you select "Add Folder," you can select one or multiple folders from a single location. Level 1. 29 points. Posted on Oct 6, 2021 2:09 PM. Youtubetomp4converter.org. Once on the website there's a tab at the top that let's you convert to mp3. (I've tried converting to both mp4 and mp3 and they both work with iTunes). So far, so good! Good luck! View in context. Convert Apple Music, iTunes songs and audiobooks, Audible books to MP3. UkeySoft iTunes Audio Converter helps you easily to convert Apple Music, iTunes AAC songs, iTunes M4P music, iTunes M4B audiobooks, and Audible AA/AAX books to MP3, M4A, FLAC, WAV, etc. for playing at anytime, anywhere and on any device. After upgrading my MBP to Sierra and iTunes 12.7 i can't convert to mp3 anymore. The option is just not shown in the File > Convert menu anymore. 😕 pic. Have changed preferences > import settings to see if that would help but it doesn't. Converting mp3 to wav is possible strangely enough but i mostly use converting aif or wav to 320 mp3 and On Mac, open iTunes on your computer>click on the "Edit" menu>select "Preferences". On Windows, go to Edit>Preferences>General>Import Settings, and choose MP3 Encoder for the Import Using option. Select OK and return to your library. Select the songs you want to convert to MP3 from your iTunes library. Either way it can do both and handle OP's problem. Mediahuman Audio Converter will go from any format to any format and it's free. I'd suggest converting to FLAC then to MP3 320 vs. directly and it's so fast that middle stage won't matter. Super easy to install and use. OIlPG5E.