Sound Coding
It would be nice to use tags, or the "year" field in each individual track as a way to sound code. There is only so much sorting and categorizing you can do for your music before it gets extremely confusing translating it into the clocks. So I feel this would be very helpful. Just a simple setting where you could add a sound code (ex. 1970s music) and set a limit (ex. only play three in a row at max) so it doesn't play too many of the same decade, or tempo or whatever you decide in a row. If this makes sense.