This week at Lifehacker:
Hide data in files with easy steganography tools
"With some free tools for both the Mac and PC, you can embed secret information in image, PDF, HTML and MP3 files for fun or profit."
- Screenshot Tour: The keyboard shortcut goodness of Microsoft Office 2007
"...what I was instantly in love with is Office 2007's attention to mouseless navigation."
- Manage multiple Firefox profiles
"If you share a computer with family members or roommates, or if you simply browse for different reasons - like work, blogging, school research, or play - you may want to use different Firefox settings each time you sit down to surf."
- Whip your MP3 library into shape, Part II - Album art
"If your music library was built from a variety of sources (CDs, friends, download services, peer-to-peer software, etc.), chances are good you've got some missing or messed-up artwork."
- Burn almost any video file to a playable DVD
"Putting any old video file - like the DivX/Xvid-encoded videos you've downloaded with BitTorrent - onto a DVD to play on your TV can be a daunting task."
- Stream your MP3s with Netvibes-SlimServer mashup
"Stream your MP3s from any web-connected PC with a free Netvibes account, the free SlimServer software and about 15 minutes."
- Download of the Day: Pandora Downloader (Windows)
"Open source app Pandora Downloader lets you save MP3s from the popular internet radio site, Pandora."
- Lifehacker Code: About This Site add-on (Firefox)
"When you happen upon a new web site - or you're just interested in finding more about one you frequent all the time - it's difficult to get a sense of how popular it is, how long it's been around, what people are saying about it and how much it's been bookmarked."
- Download web video with the All-In-One Video Bookmarklet
"Save that YouTube or Google Video file with one click o' the toolbar."
- Automatically log in with Firefox keyword bookmarks
"Bypass a username and password authentication web page and automatically log in with a keyword and your password in the Firefox address bar with a quick search bookmark."