[MPlayer-users] creating a binary codec

[Andrew Daviel]

We have a Nortel PBX phone system with voicemail over IMAP.
The raw voicemail files are in a strange format.

Nortel provide a free player for Windows only. It won't work in wine on my 
desktop. The software includes a DLL "nmplayer.dll".

Is there a way to process this into an Mplayer binary codec ?

If so, how to tell mplayer to use it ?

(previously posted under a different title, with no response :-(  )

Andrew