[LAU] Easy sound morphing?

I've been trying to do some sound morphs between two different hits of a snare drum, one rimshot and the other a plain hit. I tried using SMSTools, and even some windows programs under wine, but the results always seem to sound more like hitting a bucket full of water than a combination of the two drums. I tried csdrummer, but only get a horrible scratchy noise from it. I looked at Loris...the python-based example that comes with it seems horrifically complicated. Maybe someone with a knowledge of Csound/Loris could be kind enough to help with a simple script? Or a step-by-step how to achieve this with Cecilia? Are there any other programs I could try?