Creative has uploaded new drivers for the Audigy2 with:

Improved front panel headphones support.
Correct surround-channel response when using EAX Effects presets.
System lock-up issue on dual processor and Hyper-Threading enabled systems resolved.
Improved MIDI playback.
Compatibility issue with NVIDIA® nForce(TM) onboard gameports resolved.

Click right here to download them. Thanks Anandtech!
UPDATE: If you are having problem downloading from this link check out Thomas post.