MSI Z68MA-ED55 (B3) LGA 1155 Intel Z68 HDMI SATA 6Gb/s USB 3.0 Micro ATX Intel Motherboard
$139.99
http://www.newegg.com/Product/Product.aspx?Item=N82E16813130596
This one has ;
THX TruStudio PRO: deliver the fullest audio experience
GIGABYTE G1.Assassin LGA 1366 Intel X58 SATA 6Gb/s USB 3.0 XL ATX Intel Motherboard
$339.99 and a $80 rebate
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128472
Then you have a motherboard like this one;
Onboard Creative Soundblaster X-Fi Digital Audio Processor (20K2) with X-Fi Xtreme Fidelity and EAX AHD 5.0 Technologies
Dolby Digital Live
DTS Connect
Built-in Front Audio Headphone Amplifier
Nichicon High-end Audio Capacitors
These features are built into the motherboard and it almost makes a seperate sound card not nesscesary. There will still be some people that just like to have a seperate sound card.