In the context of The Bay S03E03 M4A, it could imply that there's an audio file or a soundtrack from Season 3, Episode 3 of the show, encoded in the M4A format.
Technical metadata recovery or a full episode plot breakdown? the bay s03e03 m4a
The Bay series 3 review | episode-by-episode recaps - Dead Good In the context of The Bay S03E03 M4A,