My Cakewalk Sonar 8 Producer Edition gives no sound when playing back tracks and it does not register audio/MIDI input. A track imported from a CD into Sonar plays perfectly when played back from the programme. I have a pair of Behringer MS40 monitors, but I use mostly a pair of SONY earphones as monitors. WMP and Realplayer and other sound sources produce sound in the monitors. Chain: instrument/mic into Roland VM-3100 digital mixer, connected to an M-Audio 1010 LT sound card: into PC via phono cords from 'bus out' into 1 and 2 IN, from computer to mixer through 1 and 2 OUT into mixer channels 11 and 12, also phono cords. The drivers currently used under Options>Audio>Advanced are WDM/KS, but I've used WASAPI and ASIO with similar (no) effect. The track output indicates that the sound is sent to the M-Audio 1010 LT. I've tried the troubleshooting advice in the manual provided. I'm running out of ideas. How do I get sound in and out of Sonar?