Sentinel, you are correct. The usual stats given are the number of songs and less freqently, the number of hours.
However, press releases are used more to sell the company's stock than product.
People looking for MP3 players typically read reviews, see ads or compare merchandise in stores. It's doubtful they read PRs issued on business wires specific to the stock market.
IMO that e.Digital's branded products have always sold poorly because they have no truly stellar reviews, no real advertising, and except for a brief spell in CompUSA and Good Guys, no way to compare them in a retail setting.
e.Digital spends virtually no money on advertising, which is understandable given that they have no money and had to borrow from the COB for 2 separate productions of 200 units/time of Odyssey 1000s.
For all anyone knows, the 2 new configurations offered may be intended to stimulate some sales of 20 GB inventory that wasn't moving.
What ever happened to that viral marketing program FF announced a couple of webcasts ago? It's pretty clear that banners and commerials at ice skating shows and lemonade stands adjacent to porta potties staffed with people who don't work for e.Digital don't move much product.