J/psi couplings to charmed resonances and to pi

We present an evaluation of the strong couplings JD^()D^() and JD^()D^()pi by an effective field theory of quarks and mesons. These couplings are necessary to calculate pi+J/psi --> D^()+barD^() cross sections, an important background to the J/psi suppression signal in the quark-gluon plasma. We write down the general effective lagrangian and compute the relevant couplings in the soft pion limit and beyond.