A method includes receiving, at a media player at a computing device, a first portion of a media stream, and initiating playback of the first portion of the media stream. The method also includes receiving a second portion of the media stream during the playback of the first portion of the media stream, the second portion of the media stream including a platform-independent representation of source code. The method further includes compiling the platform-independent representation of the source code to generate a platform-specific component that is executable by the computing device. The method includes executing the platform-specific component at the computing device during execution of the media player at the computing device.