the cd changer on my disco is jammed... any ideas??

Helo there... I have a disco 99 which I love!!! but not so much lately... my heating sistem is not working properly... it blows cold air!! yes... I'ts winter here and I'm freezing I realize that it starts to blow hot air only when the car is runing on hi rpm... 2000+ But if reduce the speed...

Hi!!! I bought a 99 disco not too long ago.... during the summer everything was just fine... but when winter came i realize that the heating sistem was not working... it blows cold air.... it starts to blow hot air when i'm rubbing the engine to hi rpm.... but as soon I stop or reduce the...