Comment 2 for bug 662439

One reason this didn't get reimplemented is that it's kind of a strange feature. It's supposed to load the next track in whatever list it was loaded from. This doesn't really make sense though because in some places like Crates there's no such thing as a 'next track' because it's all about how you sort it.

I think in the future, we're just going to make the AutoDJ queue the only way to play tracks one after another. The queue will get some more config options like when to cross-fade, when to load the track, etc.