I'll second Ert on that- certainly the mute button is useful to have, especially in longer battles. As for quality- could come in handy as well, as I do remember, for instance, in TPA2 some battles really lagging (depending on the units present on the map) and my lack of desire to start them again, if I try to ignore the lag for the first few turns. Plus, there is even greater lag if the game is played in full-window mode, so that can also come in handy.