BlueView allows you to export files to AVI using different video compression algorithms. Some of these algorithms are not supported by Windows Media Player because they require a codec that is not part of the standard installation. These files may play in other players, such as VideoLan's VLC (www.videolan.org).
In order to export a file that will work in Windows Media Player, select the "Microsoft Video 1" video compression algorithm, which is an option when exporting the data.