How do I stop the Drum Rack...

[mrshow01]

When I'm playing back a clip of midi data from Drum Racks it triggers each sample and visually shows me the chain its triggering. The result is I cannot tweak anything on the rack because it's constantly jumping around. How do I stop this?

[longjohns]

there should be a little button on the left marked "A" which stands for auto-select