Avid Pro Audio Community - ProTools Free file format?

Ok years ago, I made some songs in Pro Tools Free. I was lucky and found one song that still has the audio with it. I have an old Powerbook with PT Free on it and the song plays and I can see the audio. However the session audio files are not aiff files. Does any one know what the file format that Pro Tools Free session audio files are?

What I am trying to do is bring the audio out in seperate files so I can open them up in another DAW that I am used to using. I know as an alternative way of opening I could just create a session for each file and then maybe convert to wav that way. But I would love to bring them over to a windows enviroment and drop them all into a file converter.