why are slide show options greyed out?

Try the Adjust button and set it for each slide you want different from the default.

OT

Typo. That should read "select the theme you want to use". But you don't want to go that far if you want to have some slides be onscreen longer that others. To have that you need to create the slideshow in iPhoto and export it to iDVD or to Quicktime and then add it to iDVD.

If you've got the jpgs files for each book page in an album select the album and click on the slideshow button in the lower toolbar. Once in the slideshow mode, click on the Setting button and set the basic parameters for the slideshow. Then in each slide you can hit the Adjust button to give that slide longer screentime and any special transition other than the one you selected in the Settings pane.

When you select your music I suggest you select it so that each slide will be on screen about 6-8 seconds including transitions. This will assure that the music will not loop and will be long enough for your slideshow when you select Scale slideshow to music. HOWEVER, many have complained that the syncing of the slideshow to the music does not work as intended and the music ends too soon.

If you find that to be the case, export your slideshow without music, import into iMovie HD 6 and add your audio tracks to it. Then you can go from there to iDVD.

OT