Change player to have square corners

How can I change the player so that the corners are square instead of round?

Use your element inspector to find where the border radius’s are coming from, then add CSS in your theme to override it. It would look something like this:

.ttw-music-player .tracklist { border-radius: 0px !important; }
.ttw-music-player .player-controls { border-radius: 0px !important; }

Also, I changed the background to be white, but now there are light grey stripes. Is there a way to change this color? I didn’t see any ways in the settings.

I’m afraid I don’t understand what you’re referring to here. Do you mean the dividing lines between each track?