First, I think you are over-complicating your setup. To use the Roland kit, all you need is a stereo instrument track with EZdrummer inserted in the top slot. Enable record on the track and play the Roland kit. You SHOULD be hearing the plugin drums(if not, then maybe its a midi driver issue). Now go read my reply here:
http://duc.avid.com/showthread.php?p...06#post2016806 for more help
