Building a new PC and I had a question about sound cards. I haven't put a PC together in many years, and I noticed that most motherboards come with integrated sound now. I know that integrated video is a no-no, but what about sound? I'm getting an ASUS P8P67 Pro motherboard, and I'm going to be gaming on my HDTV using only the built-in speakers. Should I get a separate sound card?
Not necessarily. I had a Asus Xonar D2X in my system, and sold it a few months ago, as i didn't need it anymore (even onboard is deactivated).
The solution was the HDMI-port on my Radeon and my new AVR - the sound is much better than with the soundcard i paid ~150€ for. If you have the option to use an digital output then go for that. The only problem might be the decryption for the audiopart (but this can be done by a receiver/AVR/some TV).
If you want to use a headphone an AVR will be even a gigantic step forward as you can use a headphone for HiFi (most if not all 'gamer headsets' are simply overpriced crap).
Anyway, i wouldn't recommend a soundcard anymore, as the combination of an AVR/receiver with some speakers is way much better.