you could... turn the autoplay option off on the pages you don't want it to play on load.
you could... store a cookie that the flash movie will use to determine if it was already seen.
you could... create a flash movie designed for internal pages that functions differently (i.e. doesn't show an annoying splash montage)
you could... use images instead for internal pages that replicate key functionality without flash
you could... remove flash from your website all together if it's unnecessary
you could... wrap the flash code in an if else statement that looks for a session created on the homepage, by which all future views sitewide will choose the alternative flash verision
... i'm sure there's more of them
