Another vote for this. A bit disappointed to see that this feature still hasn’t been implemented. I love how Squeezebox/Logitech Media Server handles crossfade.
I believe it is called “Smart crossfade”. When two consecutive tracks from the same album are played no crossfade is applied. When two tracks from different albums or two non-consecutive tracks from the same album are played crossfade is applied.
Cheers,
Dennis.