2005 Audi A4 Q&A

2005 Audi A4 Question: My audi has been doing this humming noise when i accelerate, it's automatic.

I jumped my friends car when i first got it, which now i know was really bad for my type of car. It's been doing this for about 3 months now. -
Answer 1
POSSIBLE ALT ISSUE OR PULLEY BEARING -