No audio when trimming silent track...

[hampco1]

Up until recently, I've been running my KRON with version 2.5. Upgraded to version 9 and the silent track will not let me hear the scene audio when trimming it, only when positioning the silent track on the audio board. When mixing music with the scene or narration track, I need to hear the narration in order to determin where the end point of the silent track should be without changing the start point. Again, version 9 will not let me hear the scene (or any rendered audio track) when trimming the silent track. Is there a way to fix this, or if not, which version did this loss of function occur? Thank you for any help you may be able to offer me!!!