AFAIK FAT32 limit is 4GB (2GB is for FAT16), but it should not be a problem to me since the maximum VOBs size is 1GB (for my tested DVDs)...
And CSS Free works on the fly (I don't know if it uses hard memory, but I don't think so) and if I enable/disable it, immediately the video on BSplayer becomes readable/scrambled...
Plus, after 2-3 VOBs have playied, the ProcessExplorer
I/O Read Bytes column indicates only about 50MB read from CSS Free...
At the moment I can't try with NTFS partitions, but when I will have more time I'll try.
Thank you