Further to the last post about Audion, glennrrr left a great comment over at Slashdot, in summary:

Steve's Value is in Cutting Away the Unnecessary [...] I was part of a three man team writing MusicMatch Jukebox for Mac OS when iTunes was released. And soon afterward I was out of a job. [...] Steve Jobs is the guy who saw through the stupidity of skins. WinAmp had them, so every MP3 player has skins. [...] At MusicMatch we spent a third of our time developing the skinning engine. And what did we end up with? A lot of ugly, non-intuitable windows designed by graphic artists with no concept of UI design, [...] If we'd have settled on a standard interface and just worked on getting the music database, radio streaming, and audio playback working we'd have finished much, much faster, and given the user a nicer experience to boot. Steve saw what was valuable in a music player and told the SoundJam guys to junk everything else. Simplify. Simplify. And the result is the preeminent digital music player.