Anthem seems to be using a different format as well. Python script is not working. Anyone working on it perhaps or willing to take a look?
I'm not well versed in all of the this but I used the beta version DragonUnPACKer v5.7.0
and scanned with HyperRipper which dumps some .669 files. Not sure where to go from there, DragonUnPacker has that format classified under "audio" in the ripper settings but I haven't been able to play any of them, probably modified, I don't know.
Haven't been able to get anywhere with Frosty Tool Suite as AnthemDemo is not supported, nor have I been able to succesfully use quickbms with the Frostbite script, UFBE (Universal Frostbite Extractor), or swbf2_bfv_dumper. The public demo was just made available January 25th though.