I don't know EZD, but I wonder if any drum VSTs play audio loops. AFAIK, the wavs they use are one shots that are then triggered by MIDI individually. I think you need to use a sampler/sample player to utilize audio loops.
To my knowledge, all the loops in EZD, Addictive Drums, Studio Instruments etc. are MIDI loops, not wavs, and only the samples are audio.