Sony DVP-CX860 Multi-disc DVD Player "40 brother controller" Questions

...Brother Has 6 Discs Disc 1 has - PArt 1 And Part 2 And Sp. FT on it < sida a only> Disc 2 has - PArt 3 And Part 4 And Sp. FT on it < sida a only> Disc 1 has - PArt 5 And Part 6 And Sp. FT ...