iDOLM@STER Dearly Stars

[Garamonde]

I know that many games use their own specific type of .BIN format, so I'm not sure if someone has looked into decompression for that game or not. There's a forum called Xentax that researches various file formats, so maybe you can find some answers there (and if not you could try asking about it). I wish I could help more but I've not attempted DS model ripping before.