Not getting any audio in my simple roll-a-ball unity/Fmod builds.

I don’t get any errors when i Build to OSX but don’t have get any audio in game.
When i build a web browser version i get this error (Assets/Plugins/FMOD/Editor/FMODEditorExtension.cs(183,47): error CS1061: Type System.IO.DirectoryInfo' does not contain a definition for GetFiles’ and no extension method GetFiles' of type System.IO.DirectoryInfo’ could be found (are you missing a using directive or an assembly reference?)) along with a bunhbunch of other fmod errors, and the game builds with no audio.

The web player has no access to the hard drive of the computer where it is running, so it’s not possible to use GetFiles().