Try treating it like a RAW file.  It has been some time but I am fairly certain I used SOX specifically for this some time ago in a large batch conversion of a few hundred to a few thousand sd2 files.  Had to give it all the pertinant data as the header file was not there.

        Seablade

On Wed, Sep 3, 2008 at 10:04 AM, Atte André Jensen <atte.jensen@gmail.com> wrote:
Tiago Tavares wrote:
> doesnt the command:
> sox inputfile.sd2 outputfile.wav
> work?

nope

atte@vestbjerg:~/music/bands/lunatunes/mp3$ sox
could_i_open_you_up_kul.sd2 could_i_open_you_up_kul.wav
sox sndfile: sndfile cannot open file for reading: Supported file format
but file is malformed.
sox soxio: Failed reading `could_i_open_you_up_kul.sd2':

--
Atte

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