I was able to easily find and create COinS for books and journals. I started thinking about images, video, audio, etc. I see references to 'info:ofi/fmt:kev:mtx:unknown' as a rft_val_fmt value some places. I would assume if I went down that road the rft.genre would have a value of 'unknown' as well. Is there some other alternative I am missing when handling other formats?
Digital Library Architect
Rutgers University Libraries
Scholarly Communication Center
Room 409D, Alexander Library
169 College Avenue, New Brunswick, NJ 08901