I installed Plex, as you suggested. That was partially successful. Alexa using Plex will play store bought MP3s from my PC library, but would not recognize my WAV. So I converted the WAV to MP3, two different ways, and Plex still cannot see the file. I may just give up on this and buy an MP3 player with a speaker. Thanks for the input, though. I did learn something new with this.