Every device has ringtones these days, even tablets like the Samsung Galaxy Tab. Maybe it's because you can actually make phone calls from this Android tablet, or maybe it's just because of the alarm clock. But either way, you're going to want to change them every now and then. Go to MENU < SETTINGS < SOUND SETTINGS < PHONE RINGTONE and select the ringtone of your choice. Press OK to save. You can also change the VIDEO CALL RINGTONE.