I have just bought  some logitech Z680 (bloody good) to go with my SB audigy 1 ex. I have set up the audio device tab a set creative asio. Set the speakers to front left/right ect, but play back is only happening through stereo. I am using an optical lead from my ex box. 5.1 works from power dvd( but you had to set that up). I have use the ang direct connection (3 leads) and that works ok in vegas but not using the optical lead, has anyone got any ideas,
Thanks in advance.