When it's in the "pending" state, you can't easily tell. The file shows up in your recent downloads list, but the money doesn't increase. In my case (a) it was a Sunday, so the sales were few and (b) the file that got downloaded had only had 2 prior downloads, and I looked when I saw it got a 3rd as its total royalty was so small.
When you look at that file's download page, you won't see anything for the current date; then you have to click on the royalty pending button and you'll see the size and date of the download, but not an amount.
Once the royalty is computed, the sale shows up on that file's download page just like the others, but it's a butterfly instead of a leaf on the left of the entry.