Steve,
All you need is a program that calls Bill Wyman and asks him for the original reel to reel tapes that recorded indiviual instruments of the song. Then, once he sends them to you, you will probably need to digitize them into flac.
PS. If you ever find a program that does that, please let me know!
PSS. the only "ioslated tracks" you will see are L/R parts of stereo tracks, or some electronically processed C or ambiance mix. Not isolated instrument tracks, unless they are bootlegs.