is it just me, or does kain seem to take an inordinately long amount of time to come down from a jump in this version?

axes have gotten a SERIOUS upgrade in this game. i've been using the dwarf axe, and i just upgraded to the orgekiller. i've NEVER used them in any other version of the game, so it's nice to see more of the weapons being given decent uses.
also, the increased drop rate is really starting to shine. i got 3 sets of giant gloves in 3 straight fights with steel golems.
also, i've been ripping apart ff4ds with ds buff .5.(ds lazy's replacement) i see some unfamiliar filetypes.
maybe someone can identify them? i'll post filenames with the unfamiliar extensions.
ability.bbd
BABIL_LARGE.NFTR
ff4.bnr
STAGEMNG_D.dat -> this file is 20mb, what is it?
theater_data.bbd
player.chaindata.lz
battle_ai.bbd
monster.chaindata.lz
OPN_upper_stereo.vx
sound_data.sdat
sound_data.sadl
i've gone through a few different sites, but i don't see any utils that exist to view or edit much of any of this stuff. i looked on rhdn, and there are 0 results for anything ds-document-related.
while looking stuff up, i randomly wandered onto some ds-related sites with some in-depth info. now, i can't seem to find them again. it was dev info, hacking, stuff like that. anyone know of any good forums related to hacking ds games/ds hardware?