VasiliyFamiliya (./2):
I recommend the Sebastian Mihai's SDK (based on NeoBitz SDK) combinated with DATlib graphic library, DATimage color reducer and NGFX SoundBuilder. Perhaps, this tools is most easy and comfortable in use.

Datlib seems amazing, i liked the documentation, but it has no license specified, which made me think twice before starting a project using it.

About the NGFX SoundBuilder, i don't understand what it does by it's description. It's a adpcm sample encoder? (Similar to github.com/freem/adpcma) Also, is freeware and use a GUI instead of CLI, which i think would make difficult to automating stuff (Ex: By using bash files)