only getting sound out of one side of earphones

i have had my 8GB clip+ for 6 months, and tonight it shut off when playing, even though it was just about fully charged.  it has done this many times, so i tried to reset it, which has worked in the past. this time it is frozen in the “flower” screen, and has been for over an hour.

also, about a week ago it stopped producing sound from the right earphone.  i have tried several different headphones, which all work fine in different devices.  i have also tried pushing the jack in further, but this makes no difference.  if i push the jack to the side, it makes inconsistent sound from the right ear.

please tell me what to do.