After the release of iTunes 12, TechiSky wrote the guide How to Make Ringtones, Alerts, Text tones on iTunes 12 which helps lots of people create custom ringtones from their music library. However, as iTunes 12 changes the default “Create AAC Version” to “Create MP3 Version”, it’s a little bit difficult for readers to set “Create AAC Version”. In this article, TechiSky includes a step-by-step guide on how to create AAC version in iTunes 12 in Mac or Windows computer. This article also works on how to create MP3, WAV, AIFF, Apple Lossless version in iTunes 12 in Mac or Windows. It’s that easy for your convert your media to MP3, AAC, WAV, AIFF, ALAC with iTunes 12 in Mac or Windows. This article also works for creating AAC, MP3, WAV, AIFF, Apple Lossless version in iTunes 11.