Slides with audio

1

I’m trying to build a foreign language tutorial using the xml slide show as a base and attaching the appropriate sounds to each image. I have several questions, having not worked with audio before. First, I’m sure I can add the audio file names to the xml, but what format should they be in? ie, I need to make the sound files, each will be as brief as a single word. Can they be in .wav form or do I have to create them in mp3 format? Secondly, can I just use loadSound() and play() to sync them with the corresponding slides?