Track Concatenator 2.4

Track Concatenator joins iTunes tracks into single, chapterized MP4 files.

Track Concatenator joins iTunes tracks into single, chapterized MP4 files. Allows output as Music or Audiobook.

Requires FFMPEG/MP4v2 (can be installed on first run).
Joins MP4/AAC files losslessly without reencoding; joins other filetypes (or mixtures of filetypes) with reencoding to MP4/AAC at the highest bitrate of the input files.
See demo video: How to merge tracks in iTunes.