Studio One 4 is the latest and greatest incarnation of Presonus’ powerful DAW – a whole production environment for making music. And at the heart of making music is working with digital audio.
There are several methods you can use to import audio. The first is to just drag and drop them from a Finder window directly into the work area of Studio One. Another option is to use the DAW’s built-in Browser to access the dedicated Loops tab. From there you can audition loops, drag and drop them in with tempo auto adjustment if required, and edit.
Read more about this here: https://ask.audio/articles/how-to-import-and-stretch-audio-files-in-presonus-studio-one-4