You should be able to use the audio out jacks on your Bluray player provided it isn't an either/or situation (i.e. either HDMI or Analog but not both at the same time) I've never tried it so I can't tell you for sure.
I use the optical digital out on my TV to the optical input on the Amp, this way everything displayed on the TV can go through the amp if desired, but I'm guessing the two channel amp your using is not Digital in any way?
I'm sure the folks at the
Audiokarma Home Theater Forum could give you the info you need.