Burning new DC releases
 

Hi, I've burned lots of Dreamcast games but when I try to burn new releases like Propeller Arena, Shikigami No Shiro, Chaos Field, Psyvariar 2... they don't work, the console tries to read them for some seconds but then appears the CDmusic menu. Do you know what is the problem? Maybe they use a different dump method for dumping DC games? I've seen that those new games don't have IP.BIN, is that normal?
Please tell me how can I burn this games, I really like Dreamcast (specially shooters!).
Thanks!