How to automatically extract MP3s?

So, I ended up downloading three whole MP3 albums from YouTube—about 40 tracks in total—but the headache is that they’re all lumped together into one massive, single file.
If my memory serves me right, way back in the day, I used to use this specific little tool that would automatically slice everything up into individual songs just by detecting the silence between the tracks, but for the life of me, I can't recall the name of it.
Does anyone out there happen to know which program that was or have a good recommendation?

I honestly think an MP3 splitter might actually do the trick here.

LINK