All, I've been playing for about 20 years or so, have read numerous books, taken a lesson or two but I am in a major funk. Seems all the books I have read teach you theory and how to play bass in a vacuum. Well darnit, I already know scales and chords! I would really like to find a book (web site, tape, DVD, etc...) that can explain how to apply the theory and knowledge to playing bass as it was meant to be played, ie: WITH OTHER INSTRUMENTS! Any advice?