RAR is one of the most common formats for archiving or compressing multiple files into one, as it is able to archive entire folders while preserving their inner structure. Although Mac OS X operating systems come with the default “Archive Utility” installed, it will not open RAR files. Instead, Apple’s suggests the free software called StuffIt Expander, which supports RAR and more than a dozen other formats. Once you decompress the audio in a RAR file, you can easily import and convert the tracks to MP3 in iTunes. Tips Warnings Writer Bio

How to Convert RAR Files Into iTunes MP3 Files on a Mac - 92