Saving as 'wav' file.

The version 0.9.5 pre-release allows for the saving of scores as '.wav' files. However, it does not seem to be working very well, in particular the sounds of the instruments.
The flute and piccolo would end up sounding like piano instead, while voices would sound like bells. Drumsets ended up having pitched sounds instead of drums. In short, the '.wav' file would end up sounding totally different from what one would hear on the playback itself.
Just like to highlight that out.