The paper deals with the problems of personalization of e-learning in the interactive digital television environment. The main problem discussed is the personalization of additional content synchronized with broadcasted AV stream. The broadcasted AV stream is fully controlled by the broadcaster and the user has no chance to influence it. The majority of existing concepts performs personalization above the course level (the content of the course is not personalized) or they are suitable for asynchronous content only (e.g. video on demand). In this paper a solution for personalization of the additional content synchronized with the AV stream is proposed. We are focusing on a standardized solution based on the SCORM standard.