I recently purchased licenses for two pieces of music production software; specifically, those are virtual instruments with a library of sound samples.
The end-user license agreement terms for both applications state that I am free to reproduce, distribute, perform etc. my derivative works (musical pieces utilizing the sound samples), as long as I don't distribute the samples on their own. There is also a statement that requires my "including a valid copyright notice" on each of my derivative works.
The contents of that paragraph read as follows:
LIMITED RIGHTS TO MEDIA ELEMENTS. The software may include certain pictures, animations, sounds, music and video clips for your reuse. You may create your own works based upon these media elements, and copy, modify, distribute, display, and perform your derivative works provided that:
2.1. you indemnify, defend, and hold [company name here] harmless from and against any claims or liabilities arising from your use of the media elements;
2.2. you include a valid copyright notice on your derivative works.
You may not sell, license or distribute the media elements by themselves or as part of any collection, product or service whose value is derived solely or primarily from the media elements themselves.
My assumption is that I am required to copyright my derivative works in order to prevent other people from copying parts of it (which could be recognized as redistribution of samples on their own).
However, the paragraph is quite confusing and I'm not completely sure whether it asks me to copyright my music with my own name, or rather include a notice attributing the creators of the software.
If I'm supposed to copyright my works, does that mean I'm restricted from releasing them on a license such as Creative Commons BY-NC-ND (attribution required, non-commercial use, no derivatives)? Could I license my works for other people to use (in unmodified form) e.g. in their videos?