So I have set up some neat little smart playlists, dividing my tunes into 80s, 90s, 2000s and everything else, further split into individual years, which is handy if I want to listen to some 80s rock music, for example. However, since there is no "album release year" tag (yet), how do you manage compilations than span across more than a few years? Do you enter the appropriate year for each individual song? Or is it set to the album's eventual release date? Basically, I don't want to listen to the Beatles if I select one of my 90s lists just because some Best Of compilation got released during that period, while on the other hand I miss out their tunes while digging through the 60s collection. What's your approach?