My problem is that I have 2.1 sound system and external subwoofer (car audio) hooked up to my computer, but subwoofer only plays when I test it on Windows speaker configuration. In Windows XP this setup worked fine, but in Win7 (build 7100, 32bit) it won't work. I'd think that because sound comes out on configuration, driver problems can be ruled out? I've tried iTunes, WMP, VLC, MPC... you name it, but none of them plays the subwoofer. I have reinstalled (integrated) soundcard drivers few times, but still nothing. I have Realtek AC'97, connected via 3.5mm jacks. I'd be grateful if someone would have any ideas how to make this work, since my Google-Fu seems to be too weak.