Hi,
i have just gone over the specs quickly on your DAV and unfortunately because it has no digital optical or coaxial input you cannot connect a new blu ray player to it to use the speaker set up, this was my first thought as to a possibility but im afraid its not to be.
as for a new player itself well theres a few to choose from and its down to budget and personal choice but i tend to aim for mid range to high end decks.