Hi Welcome to JustAnswer
While you're playing a song, go to the song listing at the bottom of the screen. Click the name of the song in the middle. This opens the up next screen. Make sure the repeat (third icon from left) isn't visible, if it is click once. Then click the three lines icon. Go in and clear all "up next" songs. Now exit back to your original screen. This should fix the problem :-)
Please accept the proposed offer and let me know when you will be available for screen sharing
Can I remotely connect to you system and fix it ?