They did NOT back up the full card structure? No CONTENTS folder with VOICE, VIDEO, AUDIO, PROXY, ICON inside? No LASTCLIP.TXT file?
Slap them. Then show them my tutorial. Just the first part is all they need to see. Well, show them THIS one.
http://library.creativecow.net/ross_shane/tapeless-workflow_fcp-7/1
Again, just the first part where it talks about backing up the ENTIRE CARD. That is A MUST!!! I cannot stress how important that is. Many NLEs won't work with tapeless media unless the full structure is there.
If you only have the MXF files...the only options are ones that cost money. I hope you have AUDIO files with those, as audio and video files are separate MXF files. The options are the Calibrated plugin:
http://www.calibratedsoftware.com/MXFImport_Mac.asp
MXF4Mac:
http://hamburgpromedia.com/products/mxf4mac/mxf-for-mac.php
Raylight:
http://dvfilm.com/raylight/raylightHelp.htm
I recommend Calibrated as it is the cheapest, and easiest to use.
Or...get Avid Media Composer 6, as it deals with MXF directly. Although getting the files into it without the full structure will be tricky. Or Adobe Premiere Pro. Both edit MXF natively.