QUOTE(cmdrpaddy @ Jul 10 2008, 03:50)

If you've only just got around to playing it how do you know its unpopular?
I think a "true" plays per day is one that actually counts how many times it has been played per day since the first time it was played (just like foobar currently does), in your example you are "punishing" a song simply because you never listened to it, not because it is bad or even because you don't like it.
If it takes 2 years to get round to listening to a song, you're hardly excited by the prospect. If I get a new piece of music I don't tend to treat it like some badly knitted jumper from a distant relative, instead I put it on straight away. Surely that tells you something. Imagine if you treated a girl friend the same way, I think it would be safe to conclude she wasn't your favourite woman in the world; yet you're right in that she may be the best lover you ever had, but then you have to ask why you were going out with her for 2 years before you bothered to find out.
QUOTE(cmdrpaddy @ Jul 10 2008, 03:50)

You would still have an actual playcount which would show how many times you listened to it.
Sure, but my point was to highlight the dangers of using this in a formula, because as you can see, it can have a hugely distorting effect, and such distortions are precisely what one is desperate to avoid. Whereas:
Playcount / Days in Database doesn't lie. As I said, it tells you that you haven't been bothered to find out whether you like that song. foo_DAR deals with this pretty well IMO, one of the ways it does this is:
$puts(pd5,$div($mul($cwb_datediff(%added%,%first_played%),5),%play_counter%))
("the no. of days between when it was added and when it was first played" x 5 ) / play count
The track is penalised if you've taken a long time to get round to playing it, but that penalty is worked off pretty quickly the more you play it until it becomes inconsequential. So yes, it's penalising tracks that one takes a long time to get round to playing, but, like with the girl analogy, if one falls in love with a song, the penalty will disappear very quickly, and they all live happily ever after.
C.