hmmm, guess i just never realized it was such a big deal. If i want to change the genre, i just right-click->options for the album i'm ripping (or the files if they already exist on my PC) and change the genre for all tracks at once.
Also, custom groupings are what playlists are for. And adding to playlists is a simple drag and drop (and you can drag/drop multliple files at once)
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