My media sound doesn't work

[AC Question]

My media volume doesn't work unless a head set is plugged in I can hear alarms and finger but no music or video sounds what can be done to did this. Ive turned off and restarted my phone several times. When I turn up my volume and it shows ringtone,media, notification and system volume controls they are all turned all the way up and the media control is in red and the others in blue