I believe that if a company is putting a media player into a small business projector, then it should not only support photos and multiple video formats, but it needs to support PDF format and the various Microsoft Office formats. As it turns out, the NEC is very competent in this regard, starting with Office players:
Microsoft Word: 97/2000/XP/2003/2007/2010
Microsoft Excel: 97/2000/XP/2003/2007/2010
Microsoft PowerPoint: 97/2000/XP/2003/2007/2010
Adobe PDF support: 1.0/1.1/1.2/1.3/1.4
The photo formats supported are: JPG, BMP
The audio formats supported: WAV, MP3, WMA, OGG
The number of video formats that the media player supports is impressive: AVI, MOV, MPG, MP4, WMV, MKV MPEG 1/2/4, H.264/AVC, WMV9, Xvid, MJPEG@1080p
All considered that's an extremely healthy level of support of major formats by this media player. Missing though is support for GIF and motion GIF but that's hardly a deal breaker!
The media player can work with SD cards (up to 32 Gig), or USB thumb drives, and, if you add the optional wireless LAN capability where available, the media player can work with files sent wirelessly.
I've dropped into this image player, many of the Media player's menus, for your consideration. They are, obviously graphically oriented, so easy to grasp just by looking at the icons.