Even these parts are no longer listed with AMX they may still have some laying around, you may want to contact them if you haven't allready done so. These things show up on Ebay as well from time to time. If you have an IR out card with an available output you could also just put an emitter on the front of the Marantz and just do without the Sam module. TV controllers had IR inputs on them if you happen to have any of these in the system that are not using that functionality.