I have a band that started as a recording project and we are going to start playing live. We use a bunch of sound clips in the songs though, as intros and in certain parts within the song. I have never needed to worry about samples before live... I've been looking into a few things like playing to a click or getting some kind of guitar pedal sampler, maybe keyboard. I play guitar and will probably be the one triggering the samples. I just wanted to get some opinions from someone with experience or advice.