Using the same library for multiple iTunes IDs

My wife and I have the same exact library. When she buys something, my computer/ipod/devices are authorized to use it. We both got new laptops and we wanted to refrain from adding too much on them. I have an iMac with the music library on it. I signed up for iTunes match so that I could have my library on my devices and our Apple TV. So the question is, how can I get the same library on her devices, without uploading this library to her laptop?
Can I simply log out of iTunes on the iMac and then log in as her and sign up for iTunes Match under her ID and go through the process again and all is done?
We'd like to maintain the separate IDs as she purchases apps on her own and then has a lot of podcast subscriptions that I don't. But again, just trying to get the shared library to her device.
Any help would be appreciated.
Thanks.

No, there is no way to do this at this time, and if you make a mistake trying, you can screw yourself up and end up locking yourself out of Match.
Apple makes a subtle and extremely annoying distinction between "authorization" and "association". You need "authorization" to play content on a particular computer, and several users with different Apple IDs can authorize their content on a single computer.
However, to do any of the following:
-auto-download content
-download previously purchased content
-use Match!
you must "associate" the computer to an Apple ID in addition to "authorizing" it. Only *a single AppleID* may be associated with a computer (not account, computer!) at a time, and this can only be changed once every 90 days. In other words, in this context, it treats the computer just like a mobile device. You can't run Match with more than one user, and Match also precludes anyone else from downloading previously purchased content.
I recently learned about this the hard way when my son came home from college and used his Apple account to re-download a single TV show on my computer. When I logged in later to try to use Match, a splash informed me I would have to wait *90 days* to switch back to my AppleID! Luckily, I emailed the iTunes store and they were able to reset it. I'm not sure if they have single incident forgiveness policy, if they were able to see exactly how much money I've put in their pockets over the last couple years, or if they were simply smart enough to realize that *not* doing so could only lose them money in the future.
Add to this the fact that you now "associate" (with a different definition) your AppleID with your *user account* to use cloud services, and you have three different and inconsistent ways your AppleID is used on a computer.
Hopefully, Apple will clean all of this up at some point.

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Welcome to the forum.
You can do it, but...
It's not supported by Apple.
Performance won't be great unless you're running a really fast network.
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The Library must be stored on an HFS+ volume - don't even try putting it on a FAT32-formatted drive.
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We have two Ipod touches and two Ipads in our home. Right now both Ipods are using the same used id and password to access itunes and sync music. But recently both os us have downloaded the Ibooks segment to our Ipads and now the only way to sync the second Ipad for Ibooks is to use the same used id and password. But the problem is that with our two Ipads in the home, we established two separate used ids and passwords one for each. Is there a way for me to still use the second Ipod touch and the second Ipad with completely separate userids and passwords. In other words to share the music library I have accumulated and yet to sign in each with our separate identities. That way the Ipads can sync and the Ipod touches can sync. Is this possible.

This is to avoid piracy. What could happen is, people could buy music, and give it away for free online. Usually it is then you buy a complete album off iTunes that it will only be available on one device. It is tied to that account, and the device must be registered to that account to listen to it.

Is it safe to use the same passphrase for multiple disks?

I have a very elaborate passphrase using letters, digits and punctuation marks that I'm fairly confident nobody will ever be able to crack even if they have the seed and hash and a couple of million GPU's to throw at it.
However, from a cryptography course I know that if two "messages" have been encrypted using the same "pad", you will be able to extract information by or-ing the messages, for example.
Now I'm sure that the encryption scheme in OS X is much more sophisticated, but just to be sure:
If I encrypt two disks using the same passphrase, and somebody steals both disks, would that make it easier for them to crack it? Is there some way they could exploit the fact that the passphrases are the same? Could they find data by combining the data on the two disks?
I assume it's not possible, but just checking.

Short answer: don't worry. AES-256 is currently a secure scheme.
Long answer: If your reference to a "pad" is to the reuse of a so-called one-time pad scheme, that's a very different cryptographic system than what's typically used now, and the attacks against a reused one-time pad are different sorts of cryptographic attacks.
If you're using a one-time pad for a whole disk, you either need a ginormous one-time pad that's itself as big as the disk, or you'll get data that's repeated; a typical disk has great wads of zeros and ranges of blocks of zeros, after all.
In modern systems, it's quite common for the same private key to be used for thousands and even millions of messages, when asymmetric encryption is used.
Now I don't know which encryption algorithm is currently being used to encrypt DMGs, but I'd suspect it's still AES-grade encryption.
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If you're interested here, then get one or two of Bruce Schneier's books on crypto. If you don't already have them.

Using the same account for multiple Macs?

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Does it make a difference if I download 4 copies of the same free app to 4 different macs?
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I know this question has ben asked a lot, but most of these questions are dealing with multiple physical units.
I have a Mac Pro Quad Core that is running Win7 under Bootcamp. Therefore, I am using the same hardware for both operating systems.
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You'll need to install the appropriate drivers, and possibly move the library to a disk in a different format, so that each operating system can read and write to the drive. Then there is no reason why you can't open the "same" library in either system, and thus it will always be up to date. Moving back & forth between the OSs should be no more difficult than opening the same library on an external drive on a number of different systems. Provided all the content is in a standard layout, media folder inside the iTunes library folder, it should just work.
tt2

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kimberlyfromtopeka wrote:
Ok,thanks but, I should be able to something so that I am able to sync the entire library again not just the purchased songs.
If the non purchased music is not on your computer, how can it Sync to your iPhone...

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How can I share only the same music with multiple iTunes accounts

Hello
I hope someone can help. [I am using Windows Vista (Unfortunately J) and iTunes 10]
I am trying to share the same music library with multiple iTunes accounts. Basically, I want to know if there is a way to automatically upload to other libraries when importing new music into my library, vice versa. [Better information below]
Me, my sister and my dad all use iTunes (on different iTunes accounts), and before now we used to have are own music on our own windows user. Due to many duplicates and a loss of hard drive space I have brought an external hard drive and organised all the music.
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If you need anymore information please ask!
Matt

Hello roaminggnome
Unfortunately the support is down at the moment, I will have a better look later. I did go though the Apple support previously, however I found nothing that worked.
The first thread I came across was “Home Sharing” however no mater what I did, it did not appear in the iTunes sharing list (I did go though the “Show Sharing Networks” support as well)
Secondly, I saw “Using A Single Library With Multiple Accounts On The Same PC” (Something like that) but all this did was let us share the same music location, if I was to rip extra music, it will not show in there library
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Background: I have a fully configured MacBook Pro running OS X 10.8.3. Also, I run Windows XP Pro SP3 using Parallels Desktop. My primary iTunes Library and all content is stored on an external hard disk and the iTunes is "pointed" to that location by setting the iTunes' Preferences' Advanced Settings to the full path where the Library is located. Everything I have inside iTunes works perfect - the size if the Library is over 225GB!
BUT, when I install and use iTunes on my Windows XP Pro operating system (under Parallels), the contents of the Library SEEMS to work okay (while I'm in Windows) but the Windows' iTunes Library location in Preferences' Advance Tab is NOT THE SAME LOCATION AS IS THE MAC's LIBRARY LOCATION! It is not at the same location as my main/primary iTunes Library is "pointed to".
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Again, this all happens by going into Windows, opening its iTunes, then THAT triggers the entire scenario I've described above - EVERY TIME!
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          USING THE SAME LIBRARY???
Thank you for any suggested solutions - VERY MUCH!
Larry

Note that sharing a folder between different OS that use different file paths is not recommended as some files can have an absolute path or other OS specific data.
You can click the Choose Folder button if you want to create or use a folder in a different location.<br />
Make sure to select an empty folder (you need to create this folder in advance) and not a folder that already has files as Firefox will use the specified location in this case.
*http://kb.mozillazine.org/Profile_Manager
You can also create a new profile via the command line.
*https://developer.mozilla.org/Command_Line_Options
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Can several members of a household use the same library with different log ins

Once you have downloaded the latest version of iTunes to a computer, can different members of the same family use the same library but with different log ins or do you need different computers?

exactly:) you first gotta transfer the apps from your devices by connecting them and going to file and "transfer purchases" and it should bring the apps over
PS: do make sure that the computer is authorized for all of the purchases do this
-go to store at the very top of the page (usually up there with file,edit,view,and controls)
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hope this helps:)

Using the same library for multiple iTunes IDs

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