Custom gaming tools:

ADXUtil - https://www.romhacking.net/utilities/1460/
CDIrip - https://consolecopyworld.com/dc/dc_utils_disk.shtml
CDR Tools - https://web.archive.org/web/20200518230843/https://www.student.tugraz.at/thomas.plank/
rADX - https://github.com/Isaac-Lozano/radx (Rust-based ADX tool)


Useful Sites:

Audcity - https://www.audacityteam.org/download/ (Free audio editor, good for converting mp3's to wav!!!)
IP.BIN Creator - https://dcemulation.org/phpBB/viewtopic.php?t=61825 (Custom logos for the memory card, etc)
Media Convert - https://www.online-convert.com/ (Upload files to be converted and hosted for free)

Making a Custom Soundtrack for CVS2 and MVC2 PS2

Custom MvC2 thread at Shoryuken - https://archive.supercombo.gg/t/complete-how-to-change-the-music-in-mvc2-how-to-make-your-game-selfboot-thread/7017