To listen to the Maine Public Radio stream, click or tap on the Play button (1) shown in the screen shot below This bar appears at the top of every page on mainepublic.org:
To switch to another stream, click or tap on the down arrow on the right (2). You will see this:
All of our streams are shown: Maine Public Radio, Maine Public Classical, Maine Public Holiday Classical and the In Tune with Sara Willis 24/7 stream. Tap or click on the desired stream. The new stream will appear in the main part of the player. If it's not already playing, tap or click on the large Play button (1).