So I was just listening to some music through some speakers on my old 1.8ghz cd macbook and then I unplugged the cable from the headphone jack and noticed that there was a red glowing light coming from the headphone jack. Now my sound is messed up, sound works properly only when something is plugged into the headphone jack. Nothing will play through the internal speakers when i try to adjust the volume with nothing plugged in I get this. Has this happened to anybody else, any solutions?