Thanks for all the replies, but I'm not trying to delete the clips, I'm trying to replace the audio. Let's say I have 16 bars of a 4/4 kick (call it Kick1.wav). That would be 64 separate clips, one on every beat. Some time later I want to change all the kick samples to Kick2.wav without using any MIDI functions. Imagine right-clicking an audio clip and having a "replace sample" option.
I've looked for it in many places to no avail. I'm afraid there is no such feature at this point in time, but I thought I'd ask :)