I discovered recently this technique for recovering audio data from MultitrackStudio .edit files. Please note that this technique applies to audio originally recorded as 24-bit stereo @ 44.1kHz .WAV. Also, the resulting recovered audio file is now reduced to 16-bit and may contain some extra "noisy" samples at the beginning. But this is better than no audio at all.
1) Get Cool Edit 2000 ( from http://www.sonicspot.com/cooledit/cooledit.html ). This is a nearly-fully functional shareware version.
2) Copy the .edit file to a new location (in case you make a mistake you won't ruin the original .edit file). A new folder is a good location to avoid confusion with the original folder containing the original .edit file.
3) Rename the .edit file extension from .edit to .PCM; .PCM represents raw, headerless audio data.
4) Open the .PCM file using Cool Edit 2000. Cool Edit will now ask you some technical questions about the format of the audio file since it is considered headerless (containing no identifying format information)...
* Interpret sample format as 16-bit stereo @ 88200 Hz
* choose Raw data: 16-bit Intel PCM (LSB, MSB)
5) Choose adjust sample type from the edit menu and set to 44100 Hz.
6) Choose Save As... from the file menu and save as a .WAV file. (Select "Windows PCM .WAV" from the drop down menu in the Save As... window). Don't use the regular "Save" menu item because it will try to save the PCM data as PCM data which is again headerless, and that would be pointless--we need a .WAV file (which has a header containing it's format identity).
Now you should have a 44.1kHz 16-bit stereo audio file with the audible sonic contents of the .edit file. As stated before, this new file will most likely contain some extra samples (of "noise") at the beginning. This is due to the assumed situation that the .edit file format does in fact contain a header, but it is now being treated as raw audio data instead of as a file header.
It is possible that GoldWave could be used for this same procedure with similar results. I will try that another time and post up the results here. I will also see if I can find out how to recover data from .edits of 44.1kHz mono audio.
Cheers! If you try this out, please let me know how it works out.