AIDS 2016: online access to conference programme
Although the search is good at finding abstracts, further links to webcasts, powerpoint slides and poster PDFs only appear to be accessible through the online conference programme.
This requires searching for and then viewing the conference session where the study is presented (whether as an oral abstract, plenary talk or other type of presentation). Once the session window is opened, a column to the right of the presentation title shows links to the abstract, plus slides and webcasts if available. Webcasts can either be viewed in the session window or as separate links on YouTube.
Other related videos are available from a single YouTube page.