Randomizing Drum Samples

[AndrewB]

I have 7 snare samples, all of the same velocity, and I want to somehow randomize which sample is played. How could I do this?

Also, the sampler I'm using is shortcircuit (http://vemberaudio.se/shortcircuit.php).

If anyone has any suggestions as to better (free) drum samplers, that would also be greatly appreciated!