hI I JUST LAUNCHED THE SONAR X1 LE SOFTWARE BUT NOTHIMG IS HAPPENING WHEN I PLAY MIDI. i CAN PLAY THE MIDI WITH OTHER SOFTWARES BUT NOT LE. I GET MIDI SIGNAL AT THE RIGHT BOTTOM BOX I ALSO GET A MIDI SIGNAL ON THE TRACK BUT NO SOUND FROM SOUND CENTER INSTRUMENTSAND OTHER SYNTHS. pLEASE HELP

Have you read through the Help file section on using Software Synthesizers?
Have you done any of the tutorials regarding recording and using soft synths?
And you still can't get sound?
Have you downloaded any necessary driver updates for your controller and your operating system?