Try parking the CTI over a flat-lined clip and then press the "M" key. That performs a Match Frame operation that should restore your audio.
In Premiere Pro CS3, copying/pasting clips and sequences between projects would sometimes cause the audio to disappear like that.
No worries I managed to sort it out! I had to select the dumped footage from the dv tapes and then select it all in sorce monitor then drop it into the timeline then delete it! Then for some reason all the audio would be returned in the edited clips! Weird bug thats all i can guess!
I apreciate the reply, and will actually give that a try as well! Thanks a mill!
The issue of Audio going "flat-line" has been around for some time. There seem to be many different scenarios that will contribute to it (maybe even cause it). One is using Copy/Paste. One seems to involve Rendering. Some others have not been linked to anything in particular.
Going back (two forum changeovers ago now), I did an article on my experiences with this in PrPro2. There were many useful tips and comments, that followed. For a bit, Stanley Jones had actually found that article in the archives. Now, it seems to be lost once more. It was in the replies in this thread, that it became clear that there could be different situations, where one might encounter this behavior, as all cases did not seem to be consistant.
For most users, Jeff's solution seems to work fine. I did, pretty much as you, to "solve" my issues.
This behavior seems fairly consistant (over versions and Projects), but the situation does seem to differ. Wish that it did not exist, or that we knew exactly what was definitely going to trigger it - we could stop doing that. Maybe we'll get lucky and some update, or upgrade to PrPro will just flat fix it in all cases.
Good luck to us all,