Selecting a Wav File from a combobox

I have a directory with a list of wave files and I want to all the user to select which wave file I will use via a combo box.

I want to get a list of the wave files and populate my combobox (string) with the list. Then when the user selects it I can take that string and use it to create a SoundWave Class for my game.

So I think I have 2 questiosn

  1. from blue print how do I get all the .wav files from a specified path
  2. Given a wav file path/name how do I create a SoundWave Class

I feel like the first question is something I can find by digging through documentation more but I cannot seem to find the answer to the second question.