You can prepare a Final Cut Pro X project for professional delivery to broadcast or other theatrical release. Follow these steps to use the 5.1 and stereo finished sound mixes to do so.

1. Create a stereo project in Final Cut Pro X.

2. Import the finished 5.1 mix as one of the following. 

• A single 6-channel interleaved audio file. Each channel in the file represents one of the 5.1 surround speakers (L, R, C, LFE, Ls, and Rs).
• Six discrete mono files (such as L, R, C, LFE, Ls, and Rs.

3. Import the finished Stereo mix as one of the following. 

• A single Stereo audio file.
• Two discrete mono files (“.L” and “.R”).

4. In the Role Editor, create a new Audio role called 5.1 Mix with six subroles called: L, R, C, LFE, Ls, and Rs.

5. In the Role Editor, create a new Audio role called Stereo Mix with two subroles called L and R.   

6. Select the 5.1 audio file in the browser and assign the six subroles of 5.1 you just created in Step 4 to the corresponding surround channels.

• If the 5.1 Mix came in as a single 6-channel interleaved clip, select that single clip in the Timeline. In the Inspector’s Audio tab change the clip’s channel layout from 5.1 to “6 monos” (so the clip has six mono components). Then right-click the clip in the Timeline and choose Expand Audio Components to reveal its six mono components. Assign each of the six subroles of the 5.1 Mix to its respective component within the 5.1 Mix clip.
• If the clip came in as six discrete mono files, you’ll have six mono clips in the Timeline associated with the Surround Mix. Assign each the six subroles of the 5.1 Mix to its respective clip.

7. Select the stereo audio file in the browser and assign the two subroles of the Stereo Mix you created in Step 5 to the corresponding stereo channels.

• If the Stereo Mix came in as a single Stereo clip, select that single clip in the Timeline. In the Inspector’s Audio tab, change the clip’s channel layout from Stereo to Dual Mono (so the clip now has two mono components). Then, right click on the clip in the Timeline and choose Expand Audio Components to reveal its two mono components in the Timeline. Assign each of the two subroles of Stereo Mix (“L” and “R”) to their respective component within the Stereo Mix clip.
• If the clip came in as two discrete mono files, you’ll have two mono clips in the Timeline associated with the Stereo Mix. Assign each of the two subroles of Stereo Mix to their respective clip.

8. Edit these audio clips into the timeline and sync them to the video. Be sure to disable any other audio that is already in the project timeline so that you only hear the new audio files.

9. When exporting roles as Mono from a Stereo project, the left and right channels are reduced in level by -3dB prior to mixing the two channels to mono in order to avoid potential clipping. In order retain the original levels of each speaker channel we’ll need to compensate for this down-mix attenuation by applying +3dB gain to each of the mix clips (not components). Select the surround clips (either 1 or 6 if they came in as discrete mono channels) and the stereo clip (either 1 or 2 if they came in as discrete mono channels). Then choose Modify>Adjust Volume>Absolute. Enter “3” in the dashboard counter, and press Enter. This will raise the volume of each clip by 3dB. Note that you should only apply the gain to each clip, and importantly, not to the individual components within that clip. Applying a gain at the clip level automatically raises the level of all its components by the corresponding amount.

10. Now choose File>Share>Master File. In the Roles As pop-up menu, choose "Multitrack Quicktime file.” Set up the Roles export as follows.

1) Video
2) L (5.1 mix)  Mono
3) R (5.1 mix)  Mono
4) C (5.1 mix)  Mono
5) LFE (5.1 mix)  Mono
6) Ls (5.1 mix)  Mono
7) Rs (5.1 mix)  Mono
8) L (stereo mix)  Mono
9) R (stereo mix) Mono

On export this will create a QuickTime file containing a video track and eight mono soundtracks in the order defined above.

11. In Compressor, choose Add File for the master QuickTime file you shared in Step 10.

12. Choose the appropriate Custom>MXF Compressor Setting (like "1080i29.97 AVC-Intra 100”) based on your delivery requirement.

13. Click Start Batch to create an MXF file with eight mono soundtracks containing the 5.1 and Stereo mixes as discrete channels.

This update can be downloaded and installed using Software Update or from the Apple Support website.

For the protection of our customers, Apple does not disclose, discuss, or confirm security issues until a full investigation has occurred and any necessary patches or releases are available. To learn more about Apple Product Security, see the Apple Product Security website.

For information about the Apple Product Security PGP Key, see How to use the Apple Product Security PGP Key.

Where possible, CVE IDs are used to reference the vulnerabilities for further information.

To learn about other Security Updates, see Apple Security Updates.

If the album names differ slightly

Slight variations in the spacing, spelling, or punctuation of an album name can cause iTunes to think the two songs are from separate albums. For example, one album name might have an extra space in it that the actual album name doesn't.

To make sure that all of the songs that are from the same album have the exact same album name, follow the steps below:

1. Select all of the songs that should be on the same album.
2. Mac: From the menu bar at the top of your computer screen, choose File > Get Info.
   Windows: Press the Control and B keys on your keyboard to turn on the iTunes menu bar. Choose File > Get Info. Learn more about menus in iTunes for Windows.
3. In the "Are you sure you want to edit information for multiple items? " message that appears, click Edit Items.
4. In the box next to "album," type the correct album name.
5. Click OK.

Use of secure tokens for authentication

When you access iCloud services using Apple’s built-in apps (for example, Mail, Contacts, and Calendar apps on iOS or OS X), authentication is handled using a secure token. Using secure tokens eliminates the need to store your iCloud password on devices and computers. Even if you choose to use a third-party application to access your iCloud data, your username and password are sent over an encrypted SSL connection.

Smart Albums that Photos displays

Existing Smart Albums from iPhoto or Aperture that use simple conditions appear similarly in Photos.

For example, an iPhoto Smart Album with images rated with two stars appears in Photos as a Smart Album with images with the keyword "2 Stars". An iPhoto Smart Album with images rated two stars or greater appears in Photos containing images with the keywords "2 Stars" or "3 Stars" or "4 Stars" or "5 Stars".

In both of these cases, the Smart Album displays the same images in Photos that it displayed in iPhoto or Aperture.

For the protection of our customers, Apple does not disclose, discuss, or confirm security issues until a full investigation has occurred and any necessary patches or releases are available. To learn more about Apple Product Security, see the Apple Product Security website.

For information about the Apple Product Security PGP Key, see How to use the Apple Product Security PGP Key.

Where possible, CVE IDs are used to reference the vulnerabilities for further information.

To learn about other Security Updates, see Apple Security Updates.

For the protection of our customers, Apple does not disclose, discuss, or confirm security issues until a full investigation has occurred and any necessary patches or releases are available. To learn more about Apple Product Security, see the Apple Product Security website.

For information about the Apple Product Security PGP Key, see How to use the Apple Product Security PGP Key.

Where possible, CVE IDs are used to reference the vulnerabilities for further information.

To learn about other Security Updates, see Apple Security Updates.

Set General preferences

Choose Apple menu > System Preferences, then click General and make sure that "Close windows when quitting an app" is selected. If this option isn't selected, Safari opens to your specified page only if that page was open when you last quit Safari. Learn more about how OS X automatically re-opens windows, apps, and documents.