Sharptools music player

SharpTools doesn’t support playing music from a device that is not added as a smart speaker to SmartThings directly. However, you may try the community developed Spotify Tile, and install Spotify app on that tablet. open the Spotify app, then select the tablet as the “device” in the Spotify Tile and play music from there. I am not sure if you can create a list with the local files on the tablet itself though.