With iPhoto 9.4.3, Apple has enhanced the consumer-level photo management app’s Photo Stream support and fixed a handful of bugs. Photos can now be deleted from My Photo Stream by dragging them to the Trash, you can use File > Export to export photos from Photo Stream, and raw images manually imported from My Photo Stream are now editable. On the bug-squashing side of the equation, one fix prevents manually rotated photos from appearing unrotated when shared to Photo Stream, another addresses a crash when syncing to Facebook, a third prevents calendar text from appearing at the wrong size and resulting in order cancellation, and the final one fixes a problem that could cause books to have an incorrect number of pages after rearranging two-page spreads. ($14.99 new from the Mac App Store, free update through the Mac App Store or Software Update, 730.91 MB direct download via Apple’s support page)
View Extra Audio Details in Snow Leopard
In Snow Leopard, Option-clicking the Volume icon in the menu bar displays a list of sound input and output devices. Choose one to switch to it; it's much easier than using the Sound preference pane. Also, hold Shift and click the icon to set the system volume, which is separate from the general output volume.