Got a file that's preventing you from emptying your Trash? Got a disk image that won't eject? Then we've got a Terminal trick you'll like. This command will show you what programs are accessing a file or volume, so you can quickly figure out what to quit to get on with your life. 

Apple released Fuji-Xerox Printer Drivers v2.4 for OS X on Thursday. The patch notes don't specify what's new, saying simply, "This download includes the latest Fuji-Xerox printing and scanning software for OS X Mountain Lion, OS X Lion and Mac OS X v10.6 Snow Leopard."

OS X looks great, but sometimes you need to give your Mac a little personality, or maybe you just need some quick visual cues for your folders files. Sandro Cuccia shows you how to engage in a fun, but Apple-sanctioned method for customizing your Mac desktop icons.

Mac Geek Gab listener Stephen is trying to update an app on his Mac, but the app's installer won't work because the app, or its processes, are still running. We show him how to quit those pesky apps and kill their hidden processes so that he can safely update or remove the app from his system.

If you've used InDesign, you may be familiar with styles, those handy-dandy formatting tools that can help you change the look of your documents pretty much instantly. In this tip, Melissa Holt will cover how to use paragraph styles in Apple's Pages program, and if you've never used them before, you may find them to be the official Best Thing Ever™ for formatting text.

Mac Geek Gab listener Josh noticed that his Mac's menu bar clock started freezing when the Mac was asleep. We explain that this is a known issue with early versions of the popular iStat Menus utility and show how to fix it with a simple update.

Sandro Cuccia revisits Preview in OS X. He shows you how to have the latest Mountain Lion version of this versatile app easily scan and store one or more signatures for later insertion into any PDF document.

If you're like Michael, you probably have lots of apps running on your Mac at any given time. Using the Application Switcher is a great way to jump between open apps, but there's a lot more than meets the eye. There are four other keys that, when combined with Command and Tab, will help you deal with running multiple apps better than ever.

If you use a device which can receive audio via AirPlay, or even just switch your Mac's audio output device, you can do that without any extra software. It's easy, and most anyone that's keeping OS X up to date can do it.

Mac Geek Gab listener Joe prefers to archive copies of his email messages for reference, but doesn't always want to keep the associated email attachments which are often unnecessary and take up valuable drive space. We show him how to use a little-know feature of Mail to remove attachments from email messages.