hey guys i am having a problem with my new reciever and i was hoping someone could help me! i have 2 DVD player connected to my reciever. one is a cheap no-name brand that is connected by optical cable and is playing in 5.1 mode. the other one is my good DVD player that is connected by co-axial cable but will only play in stereo mode. i put the disc into 5.1 mode as well as the player but the receiver says that it is playing in stereo mode. i am confused and need some help.