Ok ... a couple (few?) more questions.
First, can you answer the question about the audio patch cord (whether your card has one or not)?
Second, how about a link to the spec page for your tuner card?
Third, is this a PCI or PCIe card?
Fourth, what desktop (version) of PCLinuxOS are you running?
Fifth, are you fully updated?
Sixth, can you specify the status of the capture channel used in your sound card's setup?