Creating direct-links is a very easy process. First, navigate to the file you want to share, click the "Share"-button and select "Create Direct-Link" from the drop-down menu.
In the popup you can select for how long the link should be valid, if the user should be able to download the file and/or the preview file and you can enter a name. If you don't select the download-options - the link will only present the preview-player to the recipient.
Once you create the link, you will be redirected to the file view again and the link will be copied to your clipboard automatically.
That's it!
Tip
As a shortcut, it is also possible to create direct-links for files by clicking the blue quick-action-button at the end of the row in folder view: