Read Bill Hunt on Audio Conforming http://forums.adobe.com/thread/726693
Exactly what is INSIDE the video you are editing?
Codec & Format information, with 2 links inside for you to read http://forums.adobe.com/thread/1270588
Report back with the codec details of your file, use the programs below... A screen shot works well to SHOW people what you are doing
http://forums.adobe.com/thread/592070?tstart=30 for screen shot instructions
Free programs to get file information for PC/Mac http://mediaarea.net/en/MediaInfo/Download
What computer operating system is your Premiere Elements 11 running on? If Mac, was your purchase the Adobe Premiere Elements 11 Editor from the Mac App Store?
Be that as it may, what are the properties of the video audio file that you are importing in Premiere Elements 11?
A quick way might be for you to tell us the brand/model/settings of the camera that recorded the video audio file (including the file extension of the file).
When the file reaches the Expert workspace Timeline which is the case
a. no sound, but audio file is represented on Audio 1
b. no sound, audio file not represented on Audio 1
c. no sound, audio file represented on Audio 1 and, when you toggle the Audio Display Style to waveform, you
see or do not see a waveform.
(to the left of the word Audio 1 is a speaker icon...clicking on that icon toggles the audio track display...one of the
two choices is the waveform).
Assuming Premiere Elements 11 on Windows 7, 8, or 8.1 64 bit for now, go to Libraries/Documents/Adobe/Premiere Elements/12 and delete the complete contents of the Media Cache Files Folder that you find there. Then open the program and determine if the audio problem persists. Look to the bottom right of the workspace to observe any "conforming" activity in progress when you import the file.
We will be watching for your follow up.