Now that all of the bonus applications have been unlocked, MacUpdate is back with some surprises. Beginning today (December 13), the MacUpdate Promo bundle, also includes a license for SRS Labs iWow 2.0. The iTunes plug-in, which is especially great for anyone on a laptop, is now Leopard compatible and can really bring some extra oomph to your digital music files. The MacUpdate Promo is $49.99 and available until December 22. Buyers who have previously purchased this bundle should be receiving (or may have already received) a registration code via e-mail.