Prendendo spunto da AA, segnalo questo nuovo programma per l'ottimizzazione audio di Vista/Seven.
Promette bene

Fidelizer will instantly turn your Windows Vista/7 computer to audiophile workstation for sophisticated audiophile player like J River, XXHighEnd, HQPlayer, foobar, etc. It involves no permanent modifications so system will remain safe and sound after restart so even system with normal Windows installation can experience better sound quality when needed. I'm still considering adding some useful permanent tweaks after this program is proven itself.

Features:

-Stop over 80 services leaving only audio related ones
-Cutting edge core audio's thread, I/O priorities optimization
-State-of-art clock rate and resolution adjustment

After optimizing your system, most services related applications including network will stop running and some services may start again depending on running applications.

Please leave your feedback and suggestions for better and more flexible software in future.

You can download and test Fidelizer from Windows X's Live | Downloading Fidelizer Let me know if it helps anything in your system.