> > Only when you need to transfer regions with time stamps between songs a lot, > > because of the three formats only SDII can write those. > > Are you sure about that? > > I can use aiff or wav in pro tools and time stamping works in there. > I have to check this out... It depends on what you describe as "time stamping", but the big difference between SDII and AIF/WAV is that AIF/WAV just contain audiodata with a header indicating frequency etc, and that an SDII file includes information about the segments the file consists of, and where in the song these segments are used if they are. Suppose you record a whole vocal track in one sequencer app, then cut it into pieces (intro, chorus, some verses), and delete the silent bits between them. When you export this recording as an AIF file to another app, you'll just have the one big recording you started with. Export it as an SDII, and it will be exported including all cut&delete information. I really wish Cubase Audio on the Atari supported this format, it was a nasty job re-cutting and repositioning all my recordings when I had to transfer them to Logic on my Mac after my Falcon died. :/ So yes, there is a compelling reason to use SDII. ;) Maurits.