This paper describes a new lab experiment where students explore the magnetic force on a permanent magnet placed inside a short solenoid. This lab is the fourth experiment performed in the second semester of the calculus-based introductory physics course at Washington University in St. Louis. The experiment is performed using a speaker (which students themselves have constructed), function generator, multimeter, and Vernier microphone while all analysis is done using Logger Pro. Experiments confirm a functional relationship similar to one that students have seen in class, while showing students the applicability of classroom physics to their world.