When i put my air condition on of my hyundai accent (2002) makes a horrible unbareable noise.A/C is not workig?

If its squealing then its the belt. They pulley maybe spinning but the belt maybe lose or worse broken.. Now its not spinning it maybe the compressor then.. Either case you may need to bring to the dealership for repair.. The compressor will be very expensive..

With out looking at myself I couldnt tell you for sure to me it sounds like its the belt thats broke or just needs to be tightened.. If the pulley is not spinning then its the compressor but you have to turn the car on and the ac and see whats going on in order to know for sure

Is it a squeeling noise? Probably a belt, or the compressor is lockedand when the ac clutch kicks in the pully stops spinning. just open the hood and see what it is doing... if the pully spins then the belt is loose and needs to be replaced. if it doesn't, you have worse problems....

Check if the pulley belt is tightened (you may need a Vehicle Mechanic)

Lubricate the pulley belt with water if the belt tension is in order (you may need Vehicle Mechanic)

The new Audiobahn V series, I have thes installed in my car (not a hyundai) and they sound amazingly clear, then you need a good deck, I have the top end Pioneer and they sound awsome powered with it.