Hi xdefectedx
The inputs on the Audiophile are called RCA jacks, or sometimes phono jacks. You need 2 cords that have RCA plugs (male) on one end, and 1/4" phone plugs on the other (as you say,, they're the same as guitar cord plugs...). You'll need the above stuff if you want to use both channels of the Audiophile 2496...
I'd recommend the Audiobuddy. It's simple, quiet, and actually pretty damn good for the money. Plus it gives you 2 channels--so you can run 2 microphones in the AP2496.
I have no experience with the Behringer you mention, but it';s just a little mixer, I think--it doesn't have any preamps in it, though I could be wrong.
In a fight between Behringer and M-Audio (they make the Audiobuddy and your 2496), M-Audio wins without breaking a sweat, in my opinion (and in many others 'round here)
Good luck!