Let the hive mind of Engadget get that for you.
"I'm looking for a pair of quality headphones that aren't seemingly made of glass. I'm an avid BMXer which causes me to frequently bash on any type of technology that joins me for my daily riding. I've been through the higher quality headsets in the Skullcandy line as these are supposed to be built for "abuse," which is laughable. I cant wear earbuds or canal buds, as my large ears seem to have a repelling property upon anything that sits in them. Wired or Bluetooth doesn't really matter, but I need something that can hold up to taking a few hits every now and again. I'm trying to keep 'em under $150. Thanks!"
I don't see why Cablecards wouldn't work, the HD Tivo works with them really well, so it's already in the software. If they're certified there shouldn't be any reason why not.
I really wish Tivo would allow people who are paying monthly subscriptions to buy more Tivos to place around the house and use for free. I would love to pick up two more HD Tivos and put them in our extra rooms, but even at a discounted monthly fee, it's just too much to ask. We're tight on money, and while the normal fee is fine, anything more is too much.