And on occasion, Universal Radio in Ohio has 'em - however it's more common, at least here in the US, to modify a radio and use the Dream software. Our wiki has several links that address this.
DRM is pushed a great deal more in Europe and Asia because HF broadcasting out that way is far and away more known to the average joe, and it's more mature as an application. However DRM - like its close cousin on the MW bands, IBOC - has its own share of issues...anyway here's the link to the article - see the links at the bottom...
DRM
best regards...Mike