KDE - wrong sound device selected
An issue that comes up again and again as I 'test drive' various distros is that the wrong sound device gets selected in KDE. My machine has a defunct VIA Technologies on-board card, which I can't disable as there is no option in the BIOS. The main card is a Creative SB Live Value and this works, most distros see it and select it as the default but some don't. I also have a TV PCI card which sometimes is mistaken for a sound device.
My question is, seeing as I can't select the sound card during the install process, how do change the sound device once the system has booted? It must be possible and hopefully someone can tell me.