Ah…i must sound like an fool… I have located the mute, composition buttons etc… they were hidden as my video tracks took up all of the screen.. however these were all ok, no help there… also i imported video into a new project and it did the same there too…
Strange… I am using vegas 7… the only other variable i have is i was cutting and pasting when this change happened, still, i cant find a solution to reverse what happened.