Have you registered the Pro version (because you need BSplayer Pro to achieve the TV Tuner feature)?
Maybe try also to update the v2.0 to 2.1..
If you have alrteady registered BSplayer Pro, go to the Capture settings window (CTRL+P -> Capture) and select your device and Audio in (you need to install the driver of your periferals before you configure them in BSplayer)
Once you have done all these things, you should be able to open your device (through the "Open device" BSplayer menu item) and to configure it you have to click on "Capture settings" menu item.
If you have still problems contact the Pro assistance here:
support@bsplayer.com