You can hook up your Korg MIDI with a USB connection. For audio you can buy an USB to stereo audio input device for under $10: http://www.amazon.com/Sabrent-External-Adapter-Windows-AU-MMSA/dp/B00IRVQ0F8/ref=sr_1_3?ie=UTF8&qid=1418264218&sr=8-3&keywords=usb+audio+input

This along with the appropriate cables will get you going assuming of course that you have enough USB inputs on your laptop. Otherwise you will also need a MIDI hub: http://www.amazon.com/Rosewill-4-Port-Power-Adapter-RHUB-210/dp/B00552PMN8/ref=sr_1_3?s=electronics&ie=UTF8&qid=1418264465&sr=1-3&keywords=usb+hub+with+power+supply
Be sure to get a power-supplied hub. The above one is only $15.

BUT this is just a temporary fix. As you progress you will find that you will want a better sound system for your laptop. There are many to choose from such as Fostex, MOTU, Roland, etc. But for now the above will get you started very inexpensively.

I hope this helps.

When you are at the checkout line and they ask if you found everything say "Why, are you hiding stuff?"

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware