Week 1: From Babel's Fall'n Glory We Fled... (Michael Swanwick), Escape Pod
Week 2: Accounting for Dragons (Eric James Stone), Podcastle
Week 3: Nano Comes to Clifford Falls (Nancy Kress), Escape Pod
Week 3: The Tamarisk Hunter (Paolo Bacigalupi), Escape Pod
Week 4: Dragonomics (Lance Shonberg), Cast of Wonders
Week 4: The Cambis and Lord Iron (Daniel Abraham), Podcastle
Week 5: Anakoinosis (Tobias Buckell); Dunesteef
Week 5: Special Economics (Maureen F. McHugh), Clark's World
Week 6: Anda's Game (Cores Doctorow), Podiobooks
Week 6: Patent Infringement (Nancy Kress), Escape Pod
Week 7: Just Do It (Heather Lindsley), Escape Pod
Week 7: Tk'tk'tk (David D. Levine), Escape Pod
Week 1 was just as an excerpt, because the story features a short part on supply/ demand, the very short Accounting fro Dragons in Week 2 was used to show how to edit stories in Audacity. I've since found a couple of more stories which might be included in future versions (e.g. EP 242: The Love Quest of Smidgen the Snack Cake).
Students could self assign for the story and week (groups of three), I told them the general economics/ management topic beforehand.