People are encouraged to pick some of these and implement it. I'm leaning towards IMA since it could support streaming and be used in other formats. But of course, MS is pushing very hard to make their version the standard, weither inferer or not. Its starting to look pretty bad. Try hard to shrink the number of makefiles by having all systems compile using one makefile.
Current method fails on certain endian machines.
Need to resort to something like autoconf to really support all these platforms. Everyone who adds sound hardware to a computer has the urge to come up with their own file format. I don't know DSP at all. A Pitch Shifter is high on the list. Someone needs to add this in.