Lecture recordings represent a convenient means to supplement traditional face-to-face lectures and also to establish pure e-learning scenarios. We provide lecture recordings to our students since roughly one decade by now. The recordings are used by traditional students present at the universitys campus as well as students studying a virtual study path who are not on-site. In the last two semesters we have provided the lecture recordings in different complementary formats: a rich proprietary format based on special presentation softwarewell suited for desktop-PCs, notebooks, and netbooksand a standard video format allowing the use on smartphones and other mobile devices. In this paper we present the results of a survey on the usage of the lecture recordingsespecially considering the mobile use of the lecture recordings and the expected future potential. In particular, the two different student groups involved make these results interesting. In our perception the main finding is that mobile learning using lecture recordings is beneficial in specific situations, but not as a dominant learning model. A perspective can be seen in mobile learning as part of a broader ubiquitous learning scenario.