These are skin-specific problems, so I've moved this thread to the FotoPlayer forum section.
Those two popup error messages are fairly self-explanatory. There are a number of features in FotoPlayer that can't be used along with jAlbum widgets. If you want to use any of those features, you'll need to turn off jAlbum widget support under Album > Settings > Advanced > Metadata.
The missing music file would appear to be the result of an incomplete installation of the skin, so try reinstalling it.
Can't help with the album navigation issue, especially not without the album to look at.
Thank you very much for your help!! For others having the same viewing problems with PhotoPlayer, I tried viewing my FotoPlayer files on another Mac I own and had no problems. Then I updated the Shockwave Flash to v.11.5.502.110 which had been released November 8. Once updated the same problems occurred.