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FaceTime not logging in? Check your Mac's serial number Apps
Have you ever found that FaceTime won't let you log in even though your Apple ID and password are correct? I had that problem with a client's Mac, and nothing I tried did work. After eliminating all the obvious things, such as testing with other IDs, user accounts and even other systems, I discovered the reason.

As it turns out, FaceTime is dependent on a correct logic board serial number. This is also true for other services like iCloud. This particular Mac had its logic board replaced a long time ago, and the technician forgot to set the serial number on the new board. So instead of the regular serial number it said SystemSerialNumb in System Profiler. After setting the serial number to the correct one, which can be found on every Mac's housing, FaceTime would log in and work flawlessly.

In case you are wondering: every Apple Authorized Service Partner has access to a bootable image which contains a tool to write the serial number to the logic board.

[kirkmc adds: Interesting point. I recall having had a logic board change some years ago, and the serial number was not set (as I discovered when the Mac needed to go into service again). This was around the time that FaceTime was launched, and I could never get it to work on that Mac. It's too far in the past to be sure, but this might have been the cause.]
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No hints today Site News
No hints today, as some of us celebrate Memorial Day, and others the "late spring bank holiday."
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Create secure passwords with Siri iOS devices
Siri's ability to access Wolfram Alpha lets you access a huge amount of interesting data by talking to an iOS device. One useful thing thing Siri can do for you is ask Wolfram Alpha to generate a very secure, random password.

To do this, invoke Siri, then say "Wolfram password," or "Wolfram Alpha password." This retrieves an 8-character random password, along with a list of a half-dozen others. You can also have Siri get longer passwords, if eight characters doesn't ring your bell. Say, "Wolfram 14-character password," for example.

The downside to this is that you can't copy this password, and once you've switched away from the Siri results, you can't get them back again. So you need to either type this password on a computer or other iOS device, or write it down. Either way, make sure you delete it, or store it in some sort of encrypted file.
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Put Mac to sleep with Drafts on iOS System
Agile Tortoise's Drafts is a nifty tool for writing texts and doing things with them on an iOS device. I use it mostly for the more comfortable writing environment, and send texts as emails or tweets, but there's an entire sub-culture that's been hacking Drafts to do many things. (Check out the Drafts actions directory.)

David Sparks posted an interesting use of Drafts (credited to Milosz Bolechowski; I couldn't find the original on his site), together with noodlesoft's Hazel - a tool that automates tasks on your Mac - to put a Mac to sleep. In essence, Hazel looks for a file named "MB sleep" in a the Drafts folder in his Dropbox folder; when it finds that file, it puts the Mac to sleep with an AppleScript.

I think you might be able to do this with folder actions as well, but I'm not very good with AppleScript. So if you can, feel free to post a script in the comments.
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Use Flickr as a cloud drive Internet
Flickr has announced that all users will now have 1 TB of storage for free. With that much space, surely it would be interesting to figure out how to use Flickr as a cloud drive.

Ricardo Tomasi has done just that with Filr, a command-line tool that turns Flickr into a storage repository. This solution isn't ideal, since it's only available for now from the command line, and has only been tested with certain types of files (images), and only on files of up to 15 MB. But it's worth highlighting, and I'm sure others will come up with better solutions very soon.

Note: this may violate Flickr's Terms of Service. Use at your own risk.
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Quick way to get artwork from currently playing iTunes track Apps
iTunes makes it easy to retrieve the artwork from the currently playing song. Just drag & drop the artwork displayed in the iTunes LCD (the bar at the top of the iTunes window, showing artwork, progress bar, etc.) or the MiniPlayer to the Finder, or to any other application that you can drag images to. You'll get a graphic file of the current artwork.
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Control iTunes AirPlay streaming with AppleScript Apps
iTunes 11.0.3 provides AppleScript support for controlling AirPlay devices. Below is a basic script that illustrates how AirPlay devices can be selected and applied using some of the new iTunes AppleScript classes and properties:
tell application "iTunes"
	set apDevices to (get every AirPlay device whose available is true)
	if apDevices is {} then display dialog "No Airplay devices available." buttons {"Cancel"}
	set apNames to (get name of every AirPlay device whose available is true)
	set selAirplayDevices to (get name of every AirPlay device whose selected is true)
	set chosenNames to choose from list apNames default items selAirplayDevices with prompt "Select Airplay device:" with multiple selections allowed
	if chosenNames is false then return
	set apChoices to {}
	repeat with i from 1 to length of apNames
		if item i of apNames is in chosenNames then set end of apChoices to item i of apDevices
	end repeat
	set current AirPlay devices to apChoices
end tell
The AirPlay device class has several useful properties, including selected and available used above (check the iTunes sdef to see them all). The kind property could be used to generically select a device:

tell application "iTunes"
	# possible values for kind are computer/‌AirPort Express/‌Apple TV/‌AirPlay device/‌unknown
	set newAirplayDevice to (get some AirPlay device whose kind is computer)
	set current AirPlay devices to {newAirplayDevice}
end tell
I've also been able to use "first AirPlay device" to reference "Computer", but that may not be consistent for all users. Of course, if you have more than one of a particular kind of AirPlay device (two or more Apple TVs or AirPort Expresses), you'll need to augment that snippet, possibly by hardcoding the name of the device or by filtering for additional properties.

[kirkmc adds: This was submitted directly to me by Doug Adams of Doug's AppleScripts for iTunes.]
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Save disk space by deleting copies of Mail attachments Apps
By default, Mail will keep file attachments that you've opened or viewed in your ~/Library/Mail Downloads folder, until you delete the associated email. You can save disk space by making the following switch:

In Mail's preferences, go to General, then set Remove unedited downloads to When Mail Quits. This does not remove the attachment from your email, just from your local cache of Mail Downloads.

On one machine I've got, I reclaimed nearly half a gigabyte after using the system for only a few months! I can't wait to see how much I get back on a system I've been using for 5 years!

[kirkmc adds: I find it odd that Mail keeps these attachments after you view them, since they're still in the emails. This is only an issue, however, if you save emails with attachments; if you delete them, then the default setting deletes the cached files as well.]
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Fix for missing "Assign to..." Mission Control bug in 10.8.x System 10.8
Having originally upgraded to 10.8 from 10.7, all of my applications' desktop assignments in (now) Mission Control were already set. I recently decided to wipe and install a fresh copy of OS X 10.8.3, and discovered that, for many of my apps, the option to "Assign to..." particular desktops or to all desktops was missing. After roaming through forum after forum I finally found a workaround for this bug.

Thankfully it's relatively simple. If you right-click on the Dock icon of a running application and you find that the "Assign to..." option is missing from the "Options" sub-menu (and of course you have multiple desktops setup in Mission Control first), if you launch the application from LaunchPad, the option to assign the application to a particular desktop will a) magically appear, and b) continue to use that assigned space regardless of how it is launched in the future.

Hope this is helpful. I spent a few good afternoons trying to fix this. Supposedly there is a bug open in Radar at Apple about this issue since the 10.8 release but it still has yet to be fixed as of 10.8.3.

[kirkmc adds: I use Spaces; um Mission Control, or whatever, and haven't seen this. The only time I have issues is when I update an app via the Mac App Store and launch it. It then doesn't go to the assigned desktop, even though the Dock menu shows that it is, indeed, set to stay on that desktop. But when I move it, it stays there after the next reboot.]
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Set up Facebook chat in OS X Messages Apps
You can set up Facebook chat in Messages. Since Facebook uses Jabber, all you need to know is your user name, and you can create an account.

Open Messages' preferences, and click on Accounts. Click on the + icon to create a new account. For Account Type, choose Jabber. For your account hem, you'll need to find your Facebook user name; this is the text after http://www.facebook.com/. The account name for the Jabber account should therefore be your_facebook_user_name@chat.facebook.com. Enter your Facebook password in the Password field, and click on Done.

Messages should log into the account, and you should see a message saying:

You are now Online to Chat | You are now Online to Chat. Please note that this also marks you as Online on facebook.com.

You can check Facebook to confirm this; you should see that you are online for chat when you visit Facebook.

H/t mactuts+
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