Sorry it's taken me so long to get back to you.
At this point I have 8 screens in various states of completion. Some load, some don't. I'm sure this will be, as you suspected, a problem with media being link incorrectly. The odd thing is that one screen that didn't work earlier in the week does now, and one that did now doesn't.
I posted a link to the zip file on one of our content management pages inside our authoring program, Vignette. Look in the column on the right side of the page for a link that says "gallery zip'. (If you meant I should put the presentation on our server - I don't have quick access to that and it will take a while.)
http://cm.hccs.edu/central/academic-departments/fine-arts-speech-communications/hcc-central-fine-arts-calendar
Thanks very much for all your help. This is a new world to me, and your patience and counsel are much appreciated.
Carla