04 525i radio/cd player cracking and cutting off
 

So I have had the car for about three weeks now and it suddenly started to make weird crackling noises and cutting out when listening to music at any level. When its a CD, sometimes the song just skips and goes to the next track. It happens with the radio as well, and it seems to progressively get worse the longer you listen to it until its unbearable.

Anyone know a solution to this problem? Its really inconsistent and don't really know where to start.