The license for the LipSync SDK says that the LipSync SDK is subject to the terms of the Oculus SDK License Agreement (it's in the file named LICENSE.TXT, the standard name for a license file). The url is https://developer.oculus.com/licenses/oculussdk/
I'll quote you this excerpt from it to save you a little time:
```
This Meta Platforms Technologies SDK License Agreement, formerly known as the Oculus SDK License Agreement, (“Agreement”) is a legal agreement between you and MPT (defined below) governing your use of our MPT Software Development Kit, formerly known as the Oculus Software Developer Kit. MPT Software Development Kit means any application programming interfaces (“APIs”), tools, plugins, code, technology, specification, documentation, Platform Services, and/or content made available by us to others, including app developers and content providers (collectively, the “SDK”).
```
Which indicates that you are agreeing to these terms. The terms further state:
```
1.1 License. Subject to the Terms and the restrictions set forth in this Agreement, MPT hereby grants you a limited, royalty-free, non-exclusive, non-transferrable, non-sublicensable (except as otherwise set forth in this Agreement), revocable copyright license (“License”) during the term of this Agreement to use and reproduce the SDK solely to develop, test, and/or distribute your Application (defined below) and to enable you and/or your end users to access MPT features through your Application. You may only use the SDK to develop Applications in connection with MPT approved hardware and software products (“MPT Approved Products”) unless the documentation accompanying the SDK expressly authorizes broader use such as with other third-party platforms.
```
You can see here that they regulate the use of all of the Oculus SDK to use with their VR hardware. It is not an open source SDK, even if the sources are provided.
I would recommend reading entire licensing documents when intending to use SDKs you obtain from 3rd parties to fully understand how you can and cannot use it.
If you decide to try to hack it in illegally, you probably won't find help at official Oculus sites and forums.
Have you explored the Asset Store for other lip sync tools, or searched GitHub? Best of luck to you. I know it's not the answer you're looking for, but it's the honest one.
