Hello,
thinking of RedBaron, and sound, i remember having problems myself once, but i got it all working. I can now start RB with Polovski's "Hell's Angels" patch as well as with the "Full Canvas Jacket" from Kess, and all works, including sound and joystick, with XP. I guess you know this "run as Win98/95 application" thingie in XP, in properties (right-click at the RB Start button).
I remember having problems with my joystick, which was a Logitech back then - unplugging and plugging it in again solved this special problem, there was sudenly sound, AND a working joystick. However rudder control vanished miraculously with the Logitech again and again.
GabiLaser (Laser here at this forum) may probably also be able to help you.
All my problems vanished, when my B17 was shot down by some Bf109s, my immersive FFB Logitech joystick suddenly began to smoke and develop a very bad shtink, until my trusty fortress became uncontrollable. After jumping out i soon bought a Saitek, which i have since 7+ years.
Greetings,
Catfish
P.S thanks for the Blue Legion info, i have never heard of that. Must have been Franco-sympathizers ?