you can fiddle with the various modules during loading (modprobe etc.). You can adjust the card and tuner number and various other bits and pieces, which can, of course be put into the /etc/modules.conf (or whatever it's called now).
There used to be some info about this in the kernel source sub-directories, under, I think, /video4linux . It gives the various card numbers for the various cards and tuners (if they are not correctly autodetected).
Have a look at your "dmesg" to see what is being autodetected.
One thing on the audio, all the correct mixer sliders are turned up, aren't they?
have fun
Nerderello