Musopen is a 501(c)(3) non-profit focused on improving access and exposure to music by creating free resources and educational materials. They provide recordings,sheet music and textbooks to the public for free, without copyright restrictions. Their mission is to "set music free". At Musopen, they obtain recordings of public domain music that have no copyrights so that visitors may listen, re-use, or in any way enjoy music. Most of the music is of classical piano or symphony pieces. Clips can be searched by Composer, Performer, Instrument, Period or Form. Downloading clips requires users to have an account, which is free. The audience for this site is open ended. Anyone from Elementary School students to the oldest of the population can easily discover music which can be used in any project they wish. It is very easy to search and download the .mp3 version of the music for use in project creation. The quality of the offerings it is excellent. Additionally, being Classical in nature, they do not "get in the way" of an overall project. This is extraordinarily beneficial if using the music as a background piece. This blessing is also the limitation; you do not have a wide range of genres from which to choose. If you want something outside the Classical field, you should investigate other free-music sites. To test this resource, I created a test podcast with the free application Audacity in which I spoke into a microphone to record my voice. I was then able to add a piece from this site as background music for the podcast. It worked very well. Teachers and students will find this to be just one of the many uses for music from this site. It is appropriate for similar presentations whether they be Prezi productions or videos published on YouTube-type sites. The only limitation is the range of possible music styles. If a classical piece is your preferred choice, however, Musopen is a wonderful site to visit

Motion Elements provides some nice background stock footage, some computer generated background footage and some title imagery. Examining the site in closer detail, I would describe the target audience for this site to be fairly universal. While scanning through the vast offerings I did not see any content that I would deem "inappropriate". I would suggest, however, that older students have an easier time with the general concept of video production that younger students, so this site may benefit them more. The free videos are of very good quality, but there are only about 5 pages of them. If you want to diversify your options, then videos can cost from $20 to $50, so I would stay with the free ones. One the plus side, the free clips do contain high definition (HD) content. If they have something you can use, you will be highly pleased with the quality. From a technical standpoint, the video clips that I downloaded to try were all in .mov format. .mov is an extension associated with Apple and its QuickTime platform, so use of these clip on Apple products, Macs for example, is certainly possible. However, I was able to easily add downloaded clips into Windows Movie Maker for editing as well with absolutely no hiccups, whatsoever. This means that not only will teachers and students benefit from easily downloaded clips covering a vast variety of subjects, they should have no difficulty using the clips on any computer platform they may be limited to in their educational setting.