CDRWIN allows you to create almost any type of Data, Audio, Mixed-Mode, or Multi-session CD, giving you complete control over the disc layout and track spacing. Disc-at-once is perfect for creating masters that are ready for commercial replication, as well as many other more common uses for CD recordable technology. It also features track-at-once recording, ISO9660 disc mastering, as well as containing a powerful disc backup utility.