Do Browsers Automatically Delete Cached Flash Elements When Not In Use Or Full?

I have about 50-100 flash elements on a page which are audio players that play only one audio each that are different from each other.Whenever a user clicks one of the player buttons, the audio either streams or loaded as a single mp3.I would like to know how browsers handle swf or audio that is on a page. If 50 of the players are clicked at 10mb each and not all at once, then I can imagine that there would be 500mb stored in the browser eventually as cache.If the browser only has 100mb to cache, how does it work? Does it delete the other swf or audio in cache or does it cause issues to the browser such as crashing or slowing down the computer, etc.