Perimeter Sound Arts has made all seven of their ACID & AppleLoops CDs available in downloadable loop packs. The loop packs are pre-sorted into categories for easier selection, and are priced at $3.99 per 50+MB pack. The purchase price includes a royalty free license for commercial use and allows you to buy only the kinds of loops you want.
Also new on the Perimeter Sound website, a conversational interview with SynthEdit synth designer Ugo, aka Chris Sciurba.