Hey, Crist there, since it's my first post i want to say hello to all. Gotta two questions about music hacking.

How I can make loops in my music. I mean do i have to do it manually via hex editor or is there any simplier way. I read that there's way to do this by Anvil Studio by add markers but it didn't work.

And second one. How I can replace sound_data.sdat file. I mean everytime i pick Replace file option i get two sets of same data. I worked today whole day on changing music for castle theme (find NSMB Wii castle theme), I know it works file because when I open VGMTrans I can hear my theme but it don't loops (as I said previous).

I'm just asking because I decide to move back to my old NSMB project (called SMB Bowser Revenge).

Thanks for any help .

I prepared something from NSMB2, not sure if it might be useful:

After small edit I got this:

I decied to upload both in case if anyone have idea how to improve it.