Use these elements in any project, personal or commercial. Just make sure to adhere to the Simple License agreement and don't re-sell these as your own work or repackage them in your own projects.
If you have any questions to ask, feel free to get in touch with me.
TO MAC USERS: If RAR password doesn't work, use this archive program:
RAR Expander 0.8.5 Beta 4 and extract password protected files without error.
TO WIN USERS: If RAR password doesn't work, use this archive program:
Latest Winrar and extract password protected files without error.