Simply changing your Spatial Sound settings in Windows to usually triggers the Microsoft Store to authorize your device for a legitimate free license. Once authorized, you own the software for that device.
Based on your search query, here is the breakdown regarding the availability and licensing of and the DTS Headphone:X technology. dts sound unbound free license free
technology, providing full access to immersive 3D spatial audio for any pair of headphones before requiring a purchase. Paid License (DTS Headphone:X) DTS Sound Unbound - Free download and install on Windows 6 Feb 2026 — Simply changing your Spatial Sound settings in Windows