Rock Band will be heading to the Wii but unlike the Xbox 360 and PS3 version that will have downloadable content coming out of its rear end, the same can't be said for the Wii. The obviously glaring answer is because the Wii is lacking a hard drive. We can understand the bin N's decision to not roll with the whole HD flavour but no storage space is truly unforgivable. Developer of said project, Harmonix, recently piped up on this issue through Rob Kay, Harmonix design director , "Come on Nintendo, we need a hard drive. That's what we want. The whole problem is there's nowhere to store it. If the
platform could do it, we'd jump on it. It's something that we championed to
Nintendo, that we'd like to do it. Who knows what will happen down the line, I
don't know what's coming down the line, but that's the reason there's no DLC in
Wii Rock Band."
Maybe the alternative would be to let Wii owners use SD cards as a storage medium for songs that they purchase online but that seems like an unlikely scenario at this point as Nintendo have made it clear that they have no plans to release a hard drive for the Wii.