Not a usb midi cable for your audio. It's an external soundcard or preamp, driven by usb from the laptop and providing an audio signal that can be hooked to your keyboard or amp.
Edit: I looked up your keyboard. For audio, use the aux in jacks of your keyboard to connect the headphone out jack of your laptop, as suggested above. That should work fine, but if it's too noisy, use a usb to audio device. For midi, get a usb to midi cable. You can also get a unit that has both audio and midi.
audio: USB Stereo Audio Adapter
http://www.amazon.com/Cable-Converter-Music-Keyboard-Window/dp/B0017H4EBG Note: I'm not suggesting this exact one, just showing you what we're talking about. You want to make sure it's usb 2 complient.
midi:
http://www.amazon.com/Cable-Converter-Music-Keyboard-Window/dp/B0017H4EBGAgain, I'm not suggesting this exact one, just showing you what we're talking about. Edit again. These simple midi devices work fine for playback, and they work for recording midi, but they have quite a bit of latency and you can't hook them to a vsti and monitor the sound from the vsti in real time. I mean, you can, but the latency will drive you nuts lol.
Those units both just use usb, and 64 bits doesn't matter. The thing to check for is that they use usb 2.
All in one. This unit gets good reviews, but for any unit like this, (that also uses asio) make sure it has 64 bit asio drivers.
http://m-audio.com/products/en_us/FastTrackPro.htmlHope this helps.