[linux-audio-user] KDE sound question - in one device, out another

Greetings, I have a working KDE desktop with two sound devices recognized and working: - An onboard soundchip (137x) with line-in, mic-in, and speaker jacks. - A set of USB soundsticks - recognized as an audio output-only device. These work fine with XMMS, mpg123, and KDE desktop sounds. Is there a simple (command-line pipe) or other way to set up an audio path which would route the line-in of the onboard chipset to the USB soundstick output? I do not ncessarily need to record the audio as it passes thru, but if that was easy to punch in and out, it would be cool. Also, can anyone suggest any pointer to docs on how to best use a two device setup like mine under KDE, or linux in genera? One point of confusion is that my (Simply MEPIS) installation gave me ALSA and OSS support, and I have no clear notion as to which to use fo what nad why... I have alway just used OSS in the past as a lot of the hardware I had access to preiously has not been well supported by ALSA. TIA and aloha, dave