I don't know about anyone else here, but I'm not sure I understand the question. You want more USB inputs? If it's a desktop PC, just get a PCI USB interface card. If it's a laptop, I'm not sure what the options are.
And I'm not sure what the relationship is between more USB ports and your soundchip is. You want to use both? Just enable the sound chip in your BIOS (if it's not already), and then set it up in Windows.
Maybe a little more detail would help.... ;)