I'm using PSE 8 and within the Organizer, I can view my avchd videos (shot with a sony hd video camera), however I am not able to hear the audio. If I view the video in another browser (ie., sony's picture motion browser), the sound is heard from the videos. I'm running vista on a dell xps 420, and have updated my drivers
The camcorder is a Sony HDR-CX7 and according to camcorderinfo.com records AVCHD with 5.1 audio. Premiere Elements has a project setting to fit AVCHD and 5.1 audio but this is the Organizer so I don't think the PE project setting is relevant.
ref to Adobe forum (but you don't need to read it)
http://forums.adobe.com/message/2344434#2344434
Note - added the camcorder model by a subsequent edit