Arni, the Audiophile USB has it s own power supply. My computer is a Dell 4550 (about 3 years old), so i would be extremely surprised if my computer can't support this setup.
Jax2, The 10-12 foot USB cable came with the Audiophile usb, so I doubt they would provide a cable that is too long. Also, i am plugged in directly to the computer via the usb cable.
I also want to add, it sounds as if it's "skipping" on the music. There's a sort of brief pause during the noisy click.
I forgot to mention another weird thing. When my mini-fridge turns off the sound coming off my computer through my Audiophile USB and out my speakers actually stops until i turn the Audiophile USB's power button off then on again and replay the song. The fridge motor turning back on however does not stop the sound. I don't understand this.