Stacey, the almight...The_Other_One sent me a private message with the title {{SHUT UP}}! because I posted after HIM!!!!
I may have made misread the color code of the RCA jack you describes, but that doesn't mean that Mr. Never_Make_Any_Mistake_and_Right is also educates, civilized or diplomate, see necessarily right.
You can deduct what that RCA jack is for; yellow is normally for video and white for sound.
Do you have any speakers on your monitor?