Something of a surprise from Turtle Beach here, they've released a new Beta WDM Driver for the Santa Cruz for Windows 98SE, Me, 2000 & XP - Build 4184 (Previous Build 4161). Here's what's new;

* Optimized Installer. Removes old driver & installs new one without having to run the install twice. Also installs in 98SE/ME/2K/XP.
* MP9 5.1 support under XP. Now you can play multi-channel WMA files!
* SRS CSII Virtual 5.1 plugin for MP9 works with this driver.
* AC3 digital over SPDIF working in 98SE (with MS QFE 269601USA8.EXE)
* Fixed game port conflict with MPX motherboards.
* Enhanced MIDI playback with better timing & fixed region exclusive(hihats).
* Fixed DSound volume scaling. Now distant sounds in games are more audible.
* Fixed distortion/intermittant noise playing multiple channels at various sample rates.
* Fixed Center/Sub volumes to better match front/rear output levels.
* synced up the windows speaker modes with Santa Cruz Control Panel.
* Optimized boot time & resume from standby times.
Alternative drivers to Turtle Beach Santa Cruz: