Broken Base: The switch from the unique Adobe Flash animation to generic Anime style animation didn't go over well with some fans.Sadly, the shutdown of Chaotic means it and all the missing songs are seemingly lost forever.
There used to be a game that allowed you to play Mugic notes, allowing you to hear the music not used in the show. Special mention goes to the Mugic, which sound really good despite being seven notes each. Songs like this really make the scenes they're played in much more intense.