Launch Sidify Apple Music Converter, click the "Key" icon or click the "Menu" icon on the upper right and then select "Register". There will be a pop-up registration dialog where you can copy and paste your registration e-mail and license code to get the program registered.
There are two possible causes for invalid code.
The registration code doesn't match the program. Please make sure you are running the right program.
Extra spaces are accidentally added while filling in your e-mail and code. Please check whether there are spaces before or after the registration info.
If you still get the Error Message, please contact our support team via [email protected] for help.
Important Notes: Since Sep. 22nd, 2016, Sidify has adopted a new mechanism for registration. New users who purchased Sidify Apple Music Converter for Mac are required to register the program with e-mail address and code while old users must register the program with registration name and code.
It's the limitation of free trial version. To unlock the restriction, please purchase a license.
Please make sure you've downloaded all your music from iTunes to your computer and your computer is well authorized with the same Apple ID that you used when downloading the iTunes music.
If you've already downloaded the music but the program fails to read them, please recreate your iTunes Music library.xml for a try:
a. Uninstall Sidify from your computer
b. Go to your home directory –> Music –> iTunes and delete "iTunes Music Library.xml"
c. Download and install Sidify from Download Center (DO NOT launch Sidify)
d. Start iTunes and play a song to generate a new .xml file
Now close iTunes and start Sidify to check whether the issue can be fixed.
Please select AAC as the output format to get the highest output quality. If you are still unsatisfied with it, please contact us via e-mail at [email protected] for further help.
Please refer to "How to Convert Apple Music at Faster Speed under Mac OS 10.13" for detailed steps.
We are sorry that currently the program is limited to 1X conversion speed under macOS 10.14 and above. The Windows version of the program is able to convert at fast speed as usual. We can help you switch to the Windows version if needed.
Please disable the Crossfade Songs in iTunes > Preferences > Playback.
Ⅰ. Please confirm that the source files can be played normally in iTunes/Music.
Please open iTunes/Music and check whether the songs you’d like to convert can be played normally.
Ⅱ. Should you encounter any of the situations as described below, please try the detailed steps to check whether the issue can be fixed:
The songs play for about 20 seconds in iTunes/Music and then skip to the next song for converting and end up with “conversion failure”.
Step 1. Please check whether the system is connected to any audio output device. If it is, please disconnect the external audio device (including the audio devices connected by Bluetooth, like speakers or headphones).
Step 2. Restart your computer and convert the songs again.
Conversion progress for a single song performs normally, but fails when it is almost completed.
Solution: Reset Documents Permissions.
For macOS10.15 users, please check System Files-> Security & Privacy to see if Files and Folders has been granted access to the relevant Documents directory. If it’s not found here, please perform the reset operation.
Search “Terminal” in finder and open it up. In the Terminal application, execute the following command to reset the access permissions of Documents.
tccutil reset SystemPolicyDocumentsFolder "com.sidify.itunesconverter"
There will be a pop-up window to request permissions when Sidify is launched next time.
 For other situations, please delete the driver file under "/Library/Audio/Plug-Ins/HAL/MMAudio Device.driver", open terminal, and enter "sudo killall coreaudiod" command. Now relaunch Sidify for a try.
If the solutions above are not effective, please send an e-mail to our support team at [email protected], describing the problem in more details and attaching your macOS and iTunes version as well as the log files of Sidify.
To find the log files, just go to the menu bar on the upper left corner and click on File > Show Log File, and a window which contains the log files would pop up. They are iTunes.log and Application.log.
Some users feedback that there's no sound with Mac laptop speakers after running Sidify. If you are encountering the same problem, please refer to How to Fix No Sound Issue on Mac after Using Sidify for the solution.
Sidify is a 100% clean program. If you fail to launch Sidify Apple Music Converter for Mac under the latest macOS 10.15 Catalina, please go to System Preferences > Security & Privacy. Under the General tab, click Open Anyway to confirm your intent to open or install Sidify. For more details, please refer to Solution to Normally Launch Sidify under macOS 10.15 Catalina.
Please contact our support team at [email protected] and provide us with your macOS, iTunes version, and log filesof Sidify for analysis.
Tips: How to find the log files of Sidify? Just find the menu button on the upper left corner and click on File > Show Log File, and a window which contains the log files would pop up. They are iTunes.log and Application.log.