ADPCM and Wine

[David D. Hagood]

Is anybody working on support for playing ADPCM wave files under Wine? 
If not, I'd like to take a crack at it.

I have an app that I use (Delorme's AAA MapNGo 4.0) that uses ADPCM wave 
files to contain spoken information on attractions. I know that Wine can 
access my sound system to play normal PCM wave files, as MN4 also has 
speech synthesis that does work. However, any attempt to play a ADPCM 
file results in the program pausing for a length of time, then 
continuing. I infer that this is because the lower levels of Wine don't 
know how to handle ADPCM.

ADPCM isn't rocket science - several programs, including sox, understand 
the protocol.

So, is anybody working on this (outside of TG and Lindows)? Any 
(non-null) pointers to useful information on how Wine has put together 
the sound subsystem? I'm not a Windows programmer, I'm an embedded 
systems and DSP person, but if I can find a block of code to hook into I 
can make this happen.