Have you seen this thread? http://tech.groups.yahoo.com/group/flexcoders/message/66211
--- In flexcoders@yahoogroups.com, "Danko Kozar" <[EMAIL PROTECTED]> wrote: > > This is a serious Flex bug! I run a Flex application on a corporate > computer that doesn't have a sound card and the application crashed. > Using Flash player debugging version I realized that the problem was > in playing sound. >