[development] How to access a file information from inside a formatter after submitting it?

I am creating a drupal cck field that allows you to create an audio recording and then display that recording immediately. After uploading the file to the server, I can't seem to figure out how to give the formatter the name of the file in order to play it back. Is there an easy way to store the file name with a tag specific to each recording? Thanks, Madeline Mirzoeff Massachusetts Institute of Technology | Class of 2012 Department of Electrical Engineering and Computer Science Department of Mathematics