does anyone make use of the bpm id3 tag? it would be great to be able to use the bpm to create a smartplaylist. the only problem is that i haven't found a simple way to acquire the bpm for tracks automatically. will anyone ever come out with a drag n' drop app that will spit out the bpm? i know there are some apps out there that you can use to tap along with the music.. not at all convenient for people with large libraries.