Thanks for your answers.
Let me try to use other words. perhaps it will be clearer...
I have a file named "side-A.DSF. whitch is Album "ABC""
Within this file there is song "1" to "3"
When I look at Album "ABC", I see within MC: side-A and 1, 2, 3.
When i tell MC play Album "ABC", MC plays "side-A" (song: 1, 2, 3) followed by the song 1, 2, 3...
My understanding was that splitting "side-A2 into its songs, the process is going PCM.
I know the apps "sacd_extract" and "ISO2DSD". They are capable to work with *.dsf files?
If it is true using "sacd_extract" is just a DSD to dsd operation I will try this first.