Ratatouille PC *.AIF files by Nicknine at 1:55 PM EDT on April 21, 2018
The music in this game is stored in AIF files which aren't recognized by vgmstream. They do have appear to have a header but I cannot figure out which encoding they use. Seems to be a variation of ADPCM.
To play in vgmstream you can you unzip this file in the folder and rename the files to .vgmstream (or .aifc if you prefer): https://www.sendspace.com/file/bjvk5d
Thanks, bnnm. I actually tried Xbox IMA using GENH before and it was broken, turned out I needed to skip 0x14 byte header as your txth specifies to make it play properly.