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His 3/14 Daily Source Code podcast discusses their plans, at least at a high level.
He begins his overview of the business around 11 minutes into the 1 hour podcast.
In addition to aggregating links to podcasts in a directory format (a la Open Directory), the company will mimic a studio model, investing in content producers and probably co-owning the properties being produced. (I'm speculating, of course.)
He talks about each content producer also working with new talent to develop new podcast properties, sounding more like talent-scout-meets-multi-level-marketing.
Based on his discussions with Madison Avenue types, it appears that he's looking at advertising as the means to support this model. Time will tell.