How can I modulate a material with an audio file?

Thanks Crisp Clover. I’m beginning to work through your solution. Will let you know if I run into problems. I didn’t know about the Sound Vis Plugin till you mentioned it. But, after installing it and reading up on it in the Epic documentation, the procedure became a lot clearer. According to the documentation, using the nodes exposed by the plugin creates fewer draw calls than using DMI. But, since I’m wanting to do this for a cinematic rather than a game, render efficiency is not as important than render quality. I’ll try both methods and see if quality differs between them. Thanks again for a very insightful and useful answer. You’re my new hero!!!