To use this with the auto dldi patching feature: download the dldi, rename to dldi.bin and place it into the "scshell" folder of your microSD replacing the existing file.
@Xdqwerty, Osu! Tatakae! Ouendan! is the Japanese version of the game, different settings/characters/songs but otherwise identical mechanics. I played that before I knew about Elite Beat Agents lol. Both fantastic games https://en.wikipedia.org/wiki/Osu!_Tatakae!_Ouendan