Scrolling problem

Hi everybody i need some help with a scrolling problem.
If you look on this website http://www.fluent.ws/ you will see they have a sound player included in the top. Well i am making a same sort of site it has a flash part with sound player in the top and the main part is html content. Now i want the content to be changeable when clicking a button in the menu but i dont want it to change the whole page only the html content part else the flash sound player will be loaded again and will start from the beginning. if you look on the url the did it with frames and you will get a scrollbar for the content stuff and the sound player is still in the top on every page you click, but i want the whole page to scroll in total not like the did on http://www.fluent.ws/
can somebody tell me how to fix this.
Maybe with div’s ?
Any help is welcome

Thanks in advance