Hi, I intend to listen bgm of super robot war Z3 recently, and I met the similar problem as yours. This is the header of these .dat files : 80 00 08 04 03 12 04 02 00 00 BB 80 00 38 50 09. I can see "CRI" in 010 editor, and I also see "adx" when draging them into criatomplayer. According to ADX wiki (https://en.wikipedia.org/wiki/ADX_(file_...X_Decoding), I know these .dat files are probably .adx files encoded as standard adx. I'm trying to find a software to edit them. Both HCA and ADX are produced by CRI. I am not sure your issue are the same one, but I suggest you check the header firstly.
Well, I rename these .dat to .adx, and convert them into wav using ADXconvertor1.3 (posted in http://game.ali213.net/thread-2930199-1-1.html, the three winRAR file, directly click and download). Result: OK. Hope this help to solve your problem.
Well, I rename these .dat to .adx, and convert them into wav using ADXconvertor1.3 (posted in http://game.ali213.net/thread-2930199-1-1.html, the three winRAR file, directly click and download). Result: OK. Hope this help to solve your problem.