I bought the A500 last week and have played around with it to test out all of the capabilities. I had hoped to be able to watch recorded HD video in MP4 format, but mine only seems to be able to play SD, notHD. I have tried both the clear.fi player and the nemo player. The videos I have tried are created using a Hauppauge HD DVR h.264 encoder in MP4 format. I have tried from microsd card as well as from the native memory. Nothing seems to work. Has anyone else had more success with this? Thanks.