it may be a buffering problem try doing this put the utube on pause wait for it to finish fully loading , watch the progress bar, when it is fully loaded then hit the play button. If it plays fine that way you have a buffering issue which can be caused by a slow internet connection.

Along RC's thought lines,

What type of Internet connection are you using?

What other computer activity, if any, are you trying to complete while listening to the music?

DA

this is the only computer on line at the time. I have " so called high speed internet ". Worked fine 2 weeks ago.
Might have to reinstall my drivers ? Makes no difference if
all other computers are off line. Any other ides ?
Thanks for your prompt response. I'm thinking Virus ? or the
buffering speed changed. I'm using the mother board's sound port. Maybe a different sound card ? Thanks in advance.

Sorry to repeat myself, but are you doing any other computer tasks as you try to listen the music? Surfing on a second tab or browser? E-mail? Publishing? Banking?

DA

As i said before. NO. I do not multi task. Nothing is running in the back ground. Started 2 weeks ago. Worked perfect till then. No skipping, no freeze frame. Ran perfect. It may skip
or hang up 2 - 3 times in a 2:30 min. song. Very annoying.
Never had to load buffering on pause before. Buffered on it's
own with no problem but might try it and see what happens.
Thanks in advance.