I saw this posted somewhere else, but can't seem to find it.
I've got a four year old, which basically means a lot of my discretionary play time is limited to after nigh-nigh time. I currently run tracks off my computer headphone jack straight to the HD500 CD/MP3 jack. It works great and is one of the big plusses of the HD series for me.
I could always run to my mixer and headphone off of that, but that is yet more cables to put away at night. Is there a native way to run outboard tracks from a computer headphone jack straight in to the Helix for those of us who need to keep it quiet at times when we woodshed?