Interesting all this...how about this obtion in Ambient, Change Wallpapers after time to time like in MacOSX,its possible or exist some script to make this feature?
In OS3.9 i use this also in Magellan.
G4/1GHz,1GB DDRam,Ati Radeon 9250 128Mb
MorphOS 2.0 demo
Molk with MacOSX 10.4.9 Tiger
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iMac 27" 2007 2,16 MHz,1,5 Gb Ram OSX 10.6.5
AppleTv 40Gb with external 160Gb HDD