To Sample from a Laptop Out or a Phone or iPod i use the Erica Synth Pico Input. You can go directly from your Laptop or Phone Headphone Out with a 3.5mm Stereo Cable to the Pico. From the Pico you can go with two Standard Patchcables into the Morphagene or Arbhar (but its just Mono In)
With the Pico Input you can also Boost the incoming Signal.