Subaru Problems? Ask a Mechanic for Answers ASAP
I would try jump starting the car again, make sure you hear the engine on the other vehicle labor when you make the connection and wait 15 minutes before trying to start the car. Then if it won't crank it almost sounds like the engine has a problem or at least the starter. The buzzing you are hearing may actually be the throttle plate in the electronic throttle moving. The motors on the throttle do make noise. Normally you probably would not hear it from inside the car.
Please try the jump start again and let me know.
Ok, sorry you are having the problem and sorry that there wasn't more I could do from here.
Please don't rate as it will only throw me under the bus for trying to help you out.