I have been associated with Spoken Tutorial Project since January 2012. I have conducted number of workshops for Java, Linux, C/C++. PHP/MySQL and LaTeX for my students.
I believe, Spoken tutorials provide the necessary connection between theoretical learning that happens in a classroom and practical applications of that learning. They enhance the effectiveness of laboratory sessions and inculcate self-learning habits in students.
I have found these workshops very useful during early years of engineering for basic programming skills. I have observed that these multi-media tutorials are especially helpful for visual or tactile learners who tend to underperform in traditional systems.
Spoken tutorials can act as a multiplier for capacity building efforts of students and they should be harnessed by educators for augmenting expansion as well as quality of education.