Flash file no sound?

I have a w580 phone but whenever I open an swf with sound it doesnt seem to play it on my phone.

Is it really like that? w580 can only play swf but with no sound? Im using swf for my wallpaper and it is cool.... but I kinda like to play swf games on my w580. well ive tried it, it worked but with no sound.

I will appreciate your help. Thanks

My w810 doesn't play sound from swf files, so I guess it's normal. I think java games are much better (tried about 30 flash games, they were stupid)