http://gbatemp.net/threads/compatible-sd-cards-for-softmod-virgin-wii-4-3u.327127/
Says I can use 8gig now, anyway thanks for the files and Homebrew seems to be working fine :)
@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