audiobook on CD to mp3

got them to merge finally by renaming them all to something else, then renaming them all back, but now no matter how I enter the names of the tracks they wont play in the right order with-in the clip.

I have tried naming them for example:

08/16

x8/16

etc…

but the clip will say on top in yellow 8/16 but will actually be playing xenocide 16/16

is this a known issue?

someone help please