How to convert audio to 'uncompressed' audio

It is obvious from all the reports, that there is a problem with FCPX audio en 'Lion".
I have experienced this too. To avoid this I have been  trying to convert the audio of my movies to aiff.
So far I didn't succeed. My camcorder (panasonic SD900) records to surround or stereo and uses compression,
I do not know what format. So how can I convertcompressed audio to 'uncompressed' audio?

You can do this using a free application called MPEG Streamclip. Open your file, and then "Export Audio..." from the File Menu. Choose AIFF, 48Khz, and stero. (if you want to retain surround, it can be done but will be much more complicated). This will create an .aif file that you can now import and use in place of the audio that is part of the clip. If you have quicktime pro, you could also create a new .mov file with the video from the original media and the audio from the .aif file...then you can import the new .mov file to FCPX.

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