Sonique player's Rabbithole viz
In the world of software MP3 players for your PC, there once lived Sonique. Cute, fairly stable, and much nicer to interact with than many similar apps, Sonique showed promise.
And as such, some dorks somewhere bought it up, underfunded and then delayed its development, they were in turn bought out, and finally the little program died. You can still get it and install it, but in a world of 2-3 year newer apps, well, it feels a bit like downgrading.
There is one reason you might do it, though.
Rabbithole, a visualization (pretty moving-picture thing that responds to the music as it plays), was only written for Sonique, and nobody has ever made a version that would work with other players. The author, 'Feldspar', is nowhere to be found.
I'm a big fan, obviously. Feldspar- where did you go? Won't you come make a plugin for us?
Update: Feldspar, aka Alec Bellanca, and CoR, aka Robert Wenzel, are the two names associated with Rabbithole. Maybe now I can find them...