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Subject:Can't open .mp4 or .m4a files
Posted by: colinu
Date:9/19/2009 7:16:45 PM

I can no longer open .mp4 or .m4a files. Tried it on 2machines. Not sure if it is a coincidence, but I just updated to itunes9.

Subject:RE: Can't open .mp4 or .m4a files
Reply by: musicvid10
Date:9/19/2009 7:47:07 PM

It's no coincidence. Head over to the Vegas Pro forum; you'll find plenty of discussion there.

Subject:RE: Can't open .mp4 or .m4a files
Reply by: colinu
Date:9/21/2009 5:36:08 AM

Thanks

I uninstalled itunes9 and Quicktime, reinstalled an older version, all okay.

Well I did have to rebuild my itunes library, playlists, etc., but both apps are working.

Subject:RE: Can't open .mp4 or .m4a files
Reply by: colinu
Date:10/27/2009 12:39:39 PM

I have tried the latest patched trial versions of Sound Forge 10 and Vegas 9, and both can open the .m4a files. I see no patches for Sound Forge 8, .

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