LBA (Logical Block Address) 0x33A
And the ISO minute:second:frame fit this translation criterion
LBA = (M * 60 + S)* 75 + F
Where M = minutes
S = seconds
F = frame
60 seconds per minute and 75 frames per second.
1 frame is a sector.
an LBA of 0x33A translates to
M = 0 (+ 2 because the first 2 minutes are a lead in for the CD-ROM)
S = 11
F = 1
02:11:01 is the coding for the sector ID
So it's 11 seconds the second frame into the disk.
The root directory is only 2K (1 sector) and 11seconds worth of data is roughly 1.5megs. This would include all the files save the big image on the disc.
GMy 'file searching' algorithm on the FF8 discs was just that, ugly

I had significant more progress on FF9 than FF8 (because it was easier). I should dig that thing out and look at your code!

Cyb