: While purchased files are often CBR (Constant Bit Rate), iTunes-ripped files often use Variable Bit Rate (VBR) to maintain quality across complex audio passages.
It is crucial to understand the legal and ethical implications. While the iTunes Plus files themselves are DRM-free (meaning they lack copy protection), the music is still protected by unless it's in the public domain. Apple's purchase agreement is for personal, non-commercial use only. Even DRM-free files contain watermarks linking them to the original purchaser, such as the account's email address, which can be traced back. Itunes Plus Aac M4a Sites