2018-05-16 18:47 GMT-03:00 Alexandre Torres Porres <porres@gmail.com>:

Moreover, I'm using sys_getblksize() in a code, and I always get "64" as the result, even if I change the block size in audio Settings or with [block~]. So, what would sys_getblksize be then?

hmm, seems it only gets the value of DEFDACBLKSIZE, which is always 64, so this isn't really good for anything and cannot be changed.