First, does this device require a cable to connect from it to the TV card (did you actually need to plug a cable there by hand)?
Since I also got no sound with the box unchecked, I assume the answer is yes. The card is preinstalled by FSC, so I didn't have to connect anything. I have never openend the box, and don't particularly want to. Information I have culled from other fora suggests there there is a cable connecting it to the sound card. The picture of the card on the Hauppauge site shows the connector.
If the answer is no (which was my impression since thenoob1 asked "DirectSound or WaveOut?"), you should uncheck the checkbox on the "Choose Audio Line" window. You can also do it at Options -> Audio. After unchecking it, try "DirectSound" or "WaveOut" (either should be fine, but just in case something is wrong with one or the other).
I don't understand what you're talking about here. The dialog box I am using is titled "Audio Connection". It contains a dropdown list titled "Choose Audio Line". If I uncheck the checkbox "This device requires a cable ..." the two drop down lists "Choose Mixer Device" and "Choose Audio Line" don't function at all.
If the answer is yes, then check the checkbox and select the device corresponding to the sound card that your cable is connected to. Also select the audio line (usually Line-in).
The sound card the cable is connected to is obviously the Realtek HDA. Which should I select in the drop-dawon list, "Choose Mixer Device": "Realtek Audio Input" or "Realtek Audio output"?
Additionally, try right-click menu, TV Options -> Devices. At the lower portion of the list are the audio devices. It should correspond to the device you selected above. There is a chance, however, that the names do not match. Try selecting different ones until you get the sound.
Unfortunately, I don't understand what you want me to right-click on. The dialog I described above is reached by clicking on "TV Tuner" in the tree view in the left-hand panel of the standard interface. The right-hand panel then shows a sub-panel on its left-hand edge with a list of available channels. I reached the audio setup by clicking the lower right-hand button, "Options", and then selecting the tab, "Audio" in the resulting dialog "TV Configuration", . This would be a lot easier to communicate if the forum provide a way to attach graphics. IAC, I have attempted all available combinations without acheiving the desired results. Unfortunately, since the settings I choose are not always there when I return to the dialog, "Audio Connections", I don't really know what MC has actually done.
Thanks for your support, Yaobing!
@thenoob1: What settings did you use in "Choose Audio Mixer" and "Choose Audio Line" to get your HVR-1300 working?