Although the Internet features excess demand for media, especially movie down- loads, the motion picture industry lacks sustainable business models for this mar- ket. An enriched form of the theory of planned behavior can identify drivers of consumer intentions to adopt a legal movie download service. Using a large data set, this study estimates structural equation model parameters. The magnitude of specific influences is subject to unobserved heterogeneity, according to a finite mixture approach with partial least squares estimation. Not only attitude, but also social influence, perceived technical feasibility, innovativeness, compatibility, and past behavior drive adoption decisions.