There's Roland interfaces also, others.
http://www.sweetwater.com/shop/computer-audio/audio_interfaces/ Just one place amongst many. And it is called an audio/interface. I record in stereo everything so two inputs are always needed for me with my synthesizer.
USB:
http://www.sweetwater.com/c695--USB_Audio_Interfaces Both expensive and cheaper for various reasons such as number of inputs, outputs and all the other stuff that goes along with needs and uses. Of course I use mine for playing music through the computer also instead of a cheap soundcard. Had one of those, they don't work as well (at least in my opinion.)
And yes I have some crappy videos up with a Sound blaster type and the expensive new one I bought.
And first and last of all you have to love the sound you get out of it, and of course there are the other options you may get later like, channel strips and other preamps for microphones and such to help with the sound. Otherwise you may have to edit more in the DAW with EQ's given and Compression given in the DAW if it has that to begin with, and soft synths from the DAW if you use those. I do not so far so I am just changing things around all the time anyway to learn to record better.
http://www.youtube.com/user/grumpalfin which case I should do some songs over, but then I am not in it for the money, just a hobby.
I really like my RME though, but it costs more also. Of course there are other manufacturers and looking through there are reviews also from people who bought the unit also.