Like Join Together, but with chapterizing again.

Works both in macOS 10.15 Catalina's Music app as well as in iTunes on earlier versions from at least Mac OS X 10.9.

Download the latest version: Track Concatenator

More information at Track Concatenator homepage.

FFMPEG and MP4v2 must be installed in order to concatenate. Concatenates MP4/AAC files losslessly, other formats are reencoded at the highest input bitrate as MP4/AAC.