Macbook pro 13' 2010 line out problem

Question

My problem is:
When i use the line out on my Macbook pro (13' 2010), before the sound or music start i hear a "click"  (or pop, i don't know how to call) noise on the headphones (or a connected speaker).
If i stop playing, and after a while (about 20 seconds), i hear a "click" again.
I think this is because it turns on and off the line out port on the macbook. (turn on the line out when i start to play, and turn off when i stop to play).
This is normal? This is irritating me, because it's annoying.
Is there a fix for this?
Please help me.

Answer 1

I just tried it on my wifes 13" and  it does have a slight pop, very low in level at the beginning of a track, and while in pause. I did a pram reset and it seemed to reduce hoe often it happens, especially in pause mode and it now seems to not do it on every song. It was VERY low in level and has not popped at all in pause while I typed this response. It might be a part of Apple cheaping out the audio section on the 13', I have a 15" and never had this issue. She never mentioned it to me, but she usuallly listens to her music very quiet.  Still no pops, where as before the pram reset there was one about every 1/2 minute or so in pause mode. You might want to give it a try and see if it helps. But it still does it at the start of the first song but I did not here it going into the next.  Pram reset: disconnect all peripherals, power offthe MBP,power it back on and hold the following keys. Option,comand,P,R(no commas) Press these keys before the start chime and continue to hold them till you hear the start chime 3 times then release. Maybe it will help.  All the best