Comment 2 for bug 1393749

I was actually thinking it's ok not to show the default cover in the spinny or the column. In the case of the spinny, if we show the default it means the default cover becomes a permanent background to the spinny, which the skin designer might not like. But I would be ok with the spinny having the default cover. In the case of the column, I can quickly see which tracks don't have covers, whereas if they had the default cover it will be much harder to figure out what tracks I need to find covers for (that little slice will look like a lot of real cover art slices).