I am following this guide about how to use Git LFS.
The article states that users need to have the Git LFS command-line client installed, or a Git LFS aware GUI client such as Sourcetree.
Much as it seems simple, I can't find any information on how to track files with Git LFS in SourceTree GUI, only command line instructions like git lfs track "*.ogg". Is it possible?
Finally, found the solution myself:
Go to Tools -> Options -> Git and press Update Embedded
Tick Enable the Bitbucket LFS Media Adapter
Go to Repository -> Git LFS -> Initialize Repository
Go to Repository -> Git LFS -> Track / untrack files ... and add the extensions to be stored in LFS.