Hey, just wondering what knowledge is out there about the .mpb container format? They can be played in audacity when imported as VOX ADPCM (albeit with a LOT of distortion and glitches). I believe they contain a Yamaha ADPCM variant. There was apparently a tool that could extract them but this only worked with Sonic Adventure 2 from what I was told. I haven't found this tool however... The format is quite common to Dreamcast games, used in Sonic Adventure 1 and 2, Jet Set Radio, Rez, Fur Fighters, etc...
Bump - I'd like to know more about this format to convert it to something more useful. I'm trying to replace sounds in Otoire. Anyone have any more info?