i'm afraid the floorpod doesn't have a usb recording output that u can use... u can use the direct line in, but that doesn't work for me (crappy soundcard, too much latency)

buy a usb interface like the Behringer Guitar Link or the IK Multimedia Stealth Plug...
According to the Line6 website, this product is ideal for home practice...but also does not offer a USB stream out for recording.
You'll need to buy an audio interface to run the 1/4" outputs into.