Yes, you can. Use the "File" object. The condition "for each file" is pretty much all you need.
Create a text variable (e.g. 'soundpath') and set it to the path of your sound folder.
Then call "for each file" with that path, create a button and store the path to the current file somewhere (I would use a sprite with a pv 'filepath' as a button). When it comes to play a file linked to a button, pass the stored path to either "autoplay file" or "play music from file" of XAudio2, depending on the sound format.