Hercules released a Windows 98SE/ME/2000/XP driver update for the Muse soundcard series. A changelog is not available. Supported cards include:
Hercules Gamesurround Muse DVD 5.1 Hercules Gamesurround Muse LT Hercules Gamesurround Muse XL Read more for installation instructions and download link.

Instructions: Please make sure to uninstall your previous drivers before launching this update.
Download and launch the installation.
Follow the instructions to install your new drivers. Download