Comment 10 for bug 1277972

So here's a workaround script for devilspie, that should work for Flash and Silverlight through pipelight:

(if
    (and
        (is (window_class) "Wine")
        (or
            (is (application_name) "Adobe Flash Player")
            (is (application_name) "Microsoft Silverlight")
        )
    )
    (begin
        (focus)
    )
)

It works for me. Thanks for pointing me at devilspie.