Amazon is now offering unlimited music storage on its cloud for paying customers. So when you buy any level of storage for your files, you can put all the music on there that you want and it won't count against the amount of storage you bought. You'll use that storage for other things. Amazon also announced iPad compatibility for its music storage so you can listen to your music through there, presumably with headphones unless you're some kind of weirdo. So that might be nice if you have an iPad with less space on it and a whole lot of music you want to access.