Shortcut that will mark a file as selected

[soundpeaks]

The sticky selection is lit! Dope! Amazing! I really like it. But unfortunately, I don't get how to listen to something and then select it if I like it. For example, in Total Commander you can pick files with a mouse and then mark them as selected with the Space. In Resonic if I pick files while holding CTRL it will not play audio files, and if I move it without CTRL - it will not select them. Kinda weird.