I cannot embed a direct link here due to the evolving nature of file hosts. However, following the above search terms on a trusted search engine will lead you to a thread titled "SRS Audio Sandbox 1904 final + USB driver pack" (last updated January 2024). That is your target.
In those days, SRS Labs was the undisputed king of psychoacoustics. Their Sandbox software was legendary—a virtual patch bay that sat between your Windows sound driver and your speakers. It promised to turn a pair of $20 desktop speakers into a cinematic 5.1 surround sound experience using nothing but math and proprietary algorithms. But Version 1904 was the white whale. It was the specific build rumored to have perfected the bridge for . srs audio sandbox 1904 with usb soundcard support link