The sound card will work fine with the new computer as long as it has the appropriate slot. (which could be either PCI or PCIe 1X)
The CD drive will also work fine as long as it has the appropriate connection. (IDE or SATA) Most motherboards have SATA but IDE is fading slowly.
As for brand, I don't really have a preferance. I don't care for ASROCK anymore though...
Just pick one of these: ASUS, Biostar, MSI, Gigabyte, Intel, EVGA
This one is pretty high end and has all the ports you will need for dual video cards and the CD Rom and sound card reguardless of what kinds of connections you have.
Here are some suggestions:http://www.newegg.com/Product/Product.aspx?Item=N82E16813128423http://www.newegg.com/Product/Product.aspx?Item=N82E16813128456http://www.newegg.com/Product/Product.aspx?Item=N82E16813130500http://www.newegg.com/Product/Product.aspx?Item=N82E16813131641
Avoid Micro ATX motherboard as they will not have the capability of dual video cards and your sound card. Also keep in mind that for that CPU you will need a motherboard that has a socket 1366 for that nice CPU you've chosen.
Motherboards are a lot cheaper if you can pass on the dual video cards but since that's what you want all of the boards above are excellent. (Personally, would buy the first one.)