You know what? A Zune LOD is absolutely possible, and ill tell you why.
I can use my Zune plugged into the table top Zune LOD and all i have to do is use my portable battery with a USB port in it to power it, and im portable. Im listening to it line-out as we speak with no connection to my pc.
Someone has to open a Zune LOD and make a little box with the parts needed in it, and a battery inside to power it.
I think it just needs to be powered and you cant just use a cable alone, but it can be made small and portable like a small amp.
Im not a tech or anything, but i cant see why someone hasnt done this yet, unless the call for it just hasnt been enough to bother, being ipods take up over 70% of the market.
I see guys building Picos and Hornets and Predators, and all kinds of amps and dacs......and NOBODY can figure out the ZUNE LOD???
I dont think its like looking for the Holy Grail.
This sounds great though right now through my Portaphile, and all im using is Sony MDR NC6 headphones right now, and it sounds good.
Wake up Techs, and be the first to make a little battery-powered line-out box for the Zune!!!!!