Another set of stock icons from The IconFactory. This set is another new style called Vinyl using all the same icon concepts as the other main sets.
IconFactory is also selling EPS versions of the icons. The various bitmap versions of the icons only come in 16x16, 24x24 and 32x32 so I assume that if you want anything larger you would have to buy the EPS versions as well and create them yourself. Icons often need a bit of work to sharpen them up, even at 64x64, because bicubic sampling rarely provides good results when there are a lot of straight lines.