Start a new project and import your clips into the project and drop it on the timeline. is there a progress bar on the lower right? That's the audio being conformed (wave form of the audio generated). If your clip is long, it takes a few moments for this to get done (once). That may be your problem.
Make sure you're using Premiere Pro 5.02.
Trash your preferences.
Clean your media cache.
Hope this helps,
Hi Dennis I did as you said.
I did not see the progress bar on the lower right.
I have upgraded to 5.0.2 and cleared the media cache but I am not clear how to trash the preferences.
It has worked intermittently since.
thanks for the help