Sure,
was using WavEditor to create and save the files I wanted to change but although it was saving as Mono, 11025Hz, 32-bit float , it saved as 16bit instead of 8bit (bitrate 88Kbps)
Found another editor online (AVS AudioEditor) and problem solved
Also for getting my new airline to display in the caption window I changed the corresponding line in the Captions.ini file located in main PFE folder. (Backup first of-cause)
End results......................
http://youtu.be/jSJgExhhrKo
Big shout to dmarch for the Wavs list
Punch.