Like I said, I can't find much on the card. The guy I got it from used Windows Media Player for it, and nothing was preinstalled for it.
Now I have the remote that goes with it, but it doesn't look like I can connect it to my computer. It uses a 3.5mm plug for the IR sensor. From what I've seen on a few HP pictures, it plugs into a special mini expansion slot by the motherboard (the one below the rear case can, with a two black and a red port)http://s3.amazonaws.com/wootsaleimages/HP_Pavilion_Elite_Quad_Core_with_1_Terabyte_Hard_Drive_Desktop_PC088Detail.jpg
So yeah, looks like I'm out of luck there. Maybe I can find another remote that will work.