This example is meant to show standalone (non RCP) use of Albireo. It is a plain Java project, not an Eclipse plug-in. To develop standalone applications with SWT, you first need to import SWT as a plain Java project (called org.eclipse.swt) into your workspace, as described on the SWT web site. Then you can import this project.

There is another example project (org.eclipse.albireo.examples.plugin) that is configured as a plug-in. This is the one you should look at if you are using Eclipse/RCP.