Hi,
I have a nexus working in softmode and hardware mode and everything is working fine, sometimes the picture freezes no matter what application I use, but this is normal because I use a dish not very capable of receiving the strongest signal. My advise is just to install the drivers and forget about the horrible application that comes bundled with it.
I am using DVB Dream in hardware mode, and RitzDVB in softmode configured to use the NVidia mpeg decoder (the CPU load is approximately 20%) this is because my Video card is NVidia too.
If you want to use the card in hardware mode you will have to connect a sound cable directly to the card's mini sound plug and the other end to the computer CD In connector or Aux In on your motherboard ( This is not so hard, I did it myself).
In my opinion, this card is worth every penny