Upgrade Procedure:

1. This upgrade file is only for standard version AAC. and the version no. should be greater than Build 44.
2. Shut down AAC
3. Copy the whole AAC folder from 'c:\program files\' to 'c:\'
4. Unzip the upgrade file and extract all files to 'c:\program files\AAC' to overwrite all the existing files.
5. Test the upgraded AAC if it works properly.
6. Copy back the AAC folder from 'C:\' to 'c:\program files\' if there is any problem.