Currently Being ModeratedMar 15, 2012 10:10 AM (in response to Caz Coach)
Mac OS X 10.4.11 can run iTunes 9.2.1 at the latest. You would need Mac OS X 10.5.8 to upgrade to iTunes 10, necessary for your Apple TV. Your mini can run 10.5
but finding a copy it getting a bit difficult, since Apple no longer sells it, and tends to be pricey now. You'll need to look to dealers or private sellers. Make sure you get a retail (black label) version of 10.5, not the system disk from another Mac (grey label).
Currently Being ModeratedMar 15, 2012 10:15 AM (in response to varjak paw)
1.5GHz Intel 512 MB 667MHZ DDR2
Are you sure you mean Intel? That would make a big difference to the OS version to which you could upgrade, and the cost, but I don't think a 2005 mini was an Intel model.
Currently Being ModeratedMar 15, 2012 10:42 AM (in response to varjak paw)
Limnos is correct; if you have a 2005 Mac mini, it's PowerPC, not Intel, and my reply will still be valid. If you do indeed have a mini with a 1.5GHz Intel processor, then you have an Early 2006 mini with an Intel Core Solo processor, and could run Mac OS X 10.6 Snow Leopard, though you'd need to expand the RAM to at least 1GB.