What programs were used to get Skull Girls audio and sprites?

[eureka]

Try out Skullmod. It can unpack the snd-wav files form the GFS archives, and can repack them. Tried it with music once...Didn't work out so well.
Also, Levels are DDS textures in the level-textures GFS files, or something. the actual levels though are 3D models of some kind.
EDIT: In terms of sprites, only ones I can think of are the character select sprites, which have a weird alpha on them, as the palettes are in different DDS textures. The actual player sprites are encrypted/compressed, I think.