recorded meeting

I recorded a meeting between myself and two other participants.  We are doing this for a final in a class for graduate school.  The meeting was recorded, and once over it automatically converted the file.  Once it was complete, I saved it under her name on my desktop to be able to email them to each other to send in for our final grade.  I can't open any of the meetings now, and when I got one to open it only played the audio part of the meeting.  Can anyone please help??