I wouldn't care if its built in or an addon as long as functionality is there.

All it does is stretch out one song infinitely, a nice gimmick/party trick, but not something that needs to be added to MediaMonkey IMO. However if an Addon can do this?

[quote="Eyal"]I quite don't understand its purpose. What's the difference with Auto-DJ set to play your entire library?[/quote]

Did you try it out? As far as I know Auto-DJ adds songs automatically to now playing list. Infinite Jukebox plays a single song for very very very long time. It finds beats and loops them. Read the blog post it explains better than I can.

I quite don't understand its purpose. What's the difference with Auto-DJ set to play your entire library?

Would it be possible to have this implemented in MediaMonkey?

It was built at Music Hack Day @ MIT. Called Infinite Jukebox. "With The Infinite Jukebox, you can create a never-ending and ever changing version of any song."

The Infinite Jukebox
http://labs.echonest.com/Uploader/index.html

a blog about music technology by Paul Lamere
Music Machinery
blog post about how Infinite Jukebox works
http://musicmachinery.com/2012/11/12/the-infinite-jukebox/

I am not a developer but saw The Echo Nest has various libraries available.