"Animorphs(/Tarzan) Soundtrack" by Augustine Quill, posted on May 8th, 2001, is an Animorphs... well, fanvid script collection. It's not really a fanfic, so much as a collection of lyrics from Disney's Tarzan's soundtrack with associated scenes from Animorphs, specifically The Hork-Bajir Chronicles and Visser. Because the TV show never covered the content discussed, it can only stay in script form, but it is essentially just a fanvid script collection and not a fanfic. As such, I don't really know how to review it except to say that it would make a couple of good fanvids.
The two fanvid scripts would work much better as songfics. That is, fanfiction stories based around lyrics to songs. Sometimes the original lyrics are posted, but not in the way these are, which are just based off of music videos to the point of being scripts.