On the main page with the overview of your collection, there is three sorting button available on the top bar, with the labels "Title", "Year" and "Col. #". The "Col. #" refers to the collection number that titles are given when added to your collection, while the "Year" refers to the production year of the title.
Pressing a sort button will sort the title list by the selected option; the "Title" option will sort ascending, while "Year" and "Col. #" will sort descending. When sorting by year, any titles without a year present will be listed in the bottom of the list.
As collection numbers are assigned with a number increasing by every title you add, the "Col. #" sorting method can be used to sort your collection after when you have added the titles to your collection, unless in the situation where you have changed the collection numbers using the My Movies' software for Windows.
When sorting by "Title" you will have an alphabetical fast scroll bar on the right side of the screen, allowing you to quickly scroll to a certain starting letter of the titles.