Sound gets progressively choppier!

[speedaddict2008]

Just like in the title,the sound gets progressively choppier as I use my PC!Also while the sound gets choppier everything gets laggier! Even my mouse lags while I watch YouTube videos!

I don't really know what causes the problem.Is it the RAM memory,or some codecs,maybe because of the sound drivers,the player,or videocard settings,maybe some CPU overheat???
__________________________________________________ _____________
Let's take them in order:

-RAM memory- SUSPICIOUS
-codecs- SUSPICIOUS
-sound drivers- NO WAY (They are up to date!)
-player- SUSPICIOUS (I have used various players,all of them seem to act the same)
-videocard settings- SUSPICIOUS
-CPU overheat- NO WAY ( It is cold outside,and in the summer[when it was very hot] I had no problems)
__________________________________________________ _____________

Please help me sort it out as it drives me MAD!

P.S: I use Vista Ultimate 32bit


Any kind of help will be very very welcome!

[speedaddict2008]

any help? please? I AM COMPLETELY DESPERATE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!bang::b ang: