The audio database covers mainly officially released audio media. Initially started as a CD database, as less physical discs were released, it
transitioned into an audio database to include Digital releases as well as other media formats.
The unique feature of this database is that Anime episodes that have music from one of these releases, have their tracks indexed with the episodes
to list how many instances a specific track was used and at what time index. We also have a separate database entry for
unreleased Anime music.