Might be easy for you!In that case, plug all those inputs into the Zoom and the Zoom's output to the CD IN on the receiver.
Easy peasy...
Ok let's get this straight. Keyboard is plugged into the stereo inputs or mono? And then I use RCA cables between receiver and Zoom using which connections? I do have a CD changer hooked up to receiver now. Do I unplug that and replace RCA from Zoom?