ArcSoft TotalMedia Theatre 6 (specifically version 6.7.1.199) was the final build of the software before it was discontinued by ArcSoft in late 2014. While some third-party sites may still host it or list "updates" through 2021, the official product has not been supported or officially maintained for years.  Key Features & Capabilities 

3. The Critical Flaws (Why It Is Discontinued)

While the software was excellent in 2014, the "2021 Final" label is misleading—it likely represents a re-upload or a final patch, not a modern update.

• Blu-ray and DVD Playback: Enjoy your Blu-ray and DVD movies with high-quality video and audio.
• Multi-format Support: Play various video and audio formats, including MKV, AVI, MP4, and more.
• Advanced Video Effects: Enhance your video viewing experience with advanced effects, such as 3D, zoom, and rotation.
• Audio Customization: Personalize your audio settings with options for equalization, surround sound, and more.

Version 6.7.1.199 can still be found on software portals like Software Informer SoftDeluxe Trial Limitations:

The last official version was 6.7.1.199, released around 2013–2014.

Windows 8.1 & 10 Compatibility: This version added full compatibility for Windows 8.1 and high-DPI displays, which helps it run more reliably on modern versions of Windows.