I have an unlocked, jailbroken, iPhone 2g. I noticed that there are a lot of files in it that I don't use. (I.e. Apps and files downloaded from cydia that were later uninstalled. Like bite SMS files.) I also see a lot of "other" space taken up in the memory bar shown in iTunes. Almost a gig. Is there a free, easy, way to free up this unused space for music. I knowthe phone stores all deleted files, just like a computer. There's the iwipe app in cydia that removes the deleted files. But I'm looking to totally clean the memory up.