hidden media files

I use DeepFreeze on my computer (i-Mac harddrive / Maverick); on rebooting the machine returns to a default image. So, I must save all my work in a folder located on a thawed space on my. When my .fms file crashes and I need to recover media, I can find most files, but not the voiceover narration made through FM’s native narration/audio recorder. I cannot locate these aiff files. Two questions: (1) How can I make visible the hidden media files are located in my folder. In your webinar, you suggested moving the media file, but how if I can’t see them? (2) Where are the aiff files if they are not in the hidden media file folder?

Thanks for any help.