Unfortunately these files are all plain PCM AIFF ones. I'm still looking for SOWT and IMA4 ones. They may be recognized with following pattern (for example by looking in the file header in a hexeditor:

FORM....AIFC..................IMA4
FORM....AIFC..................sowt

Where dots stand for any binary bytes (one dot for one byte).

[ Edited by Krashan on 2010/6/21 10:01 ]