Season 2 is where the show hit its stride. Highlights include the introduction of Cleveland's "You Don't Know Me" and the epic chicken fight. The M4B rip captures the dialogue and sound effects perfectly, though obviously, you lose the visual gags (which, let's be honest, are half the fun).
To understand the significance of Season 2 being available in this format, one must first define M4B. The file extension M4B stands for "MPEG-4 Audio Book." It is structurally identical to the more common M4A (MPEG-4 Audio) format but includes specific features tailored for long-form audio content. family guy season 02 m4b