I downloaded Audacity for a project to do exactly what you described and it was very clunky. The method I ended up using was cutting the start of the track so t

I downloaded Audacity for a project to do exactly what you described and it was very clunky. The method I ended up using was cutting the start of the track so the first few seconds were what I wanted to preview, then went through the process to ascertain parameters, remembered them, went back out to revert to the original audio track, then applied noise reduction with the parameters I'd settled on. Did not enjoy, but as you said, hard to pile on too much when you're getting a free ride.