Is that what this is cause i have protools le and could not figure this trick out....
"In ProTools, the quickest way to do this is audition the kick sound you want to use in Import>Audio (best if you have multiple samples like the steven slate library, or even record your own velocities), import it into the session and make sure your region list is open on the right hand side of your editor window (in case you ever want to drag the master region back out onto the track if it becomes truncated within your many edits). When the dialogue comes up select IMPORT TO TRACK: Start of session.
Copy/Cut that sample from the editor and align your new blank kick audio track underneath your visual reference track (or the poorly recorded live track as it may be in this instance)
Make sure your grid mode is set to something like 16th notes and just start duplicating the region by holding CTRL-click and dragging the region to the boundary of each hit that you see above it. I like to use two different hits, sometimes three for doublekick sections, or a mediumhit+hard hit for things like quick kick flams that lead into a snare accent."