If you used NetBeans with Play framework, you could notice one feature, missing from Eclipse counterpart. In NetBeans "Navigate | Go to source" does not show the internals of Play framework, while in Eclipse the sources are readily available. So I decided to fix the command which creates NetBeans project.
The commands of Play framework are located in framework/pym/play/commands, they are good old python scripts. The one responsible for netbeansify command is in file netbeans.py. Looking at the sources, I immediately spotted a useful shortcut: intstead of play netbeansify we can run play nb, I like that! :) Eclipse fans, consider switching, our command is shorter (just kidding, eclipsify has a shortcut, too)
Anyway, to fix the problem with "navigate to sources" I replaced the following lines: