Multiple elements per page (adding more elements)

[jason.dixon.email]

So it also means that if there's a theme with multiple content blocks in it, custum fealds are needed to put content in them?

If you want a theme with multiple hardcoded content inputs you could try this plugin.
http://get-simple.info/extend/plugin/sim...nputs/523/

It automatically provides different inputs for elements, as they are defined in the template.