Many thanks to raedon in the comments for pointing out that the music and speech extractors didn’t work correctly with the Telltale editions of The Wolf Among Us and The Walking Dead Season 2.
Since I only have the Steam editions of these games the game dir wasn’t auto-detected if you had the Telltale versions. This caused problems with automatically identifying the correct resource files that the tools should open.
I’ve now fixed this and uploaded new versions of both tools. I’ve also added support for The Walking Dead Season 2: Episode 2 to the Speech Extractor.