All of these fields are intended to contain URLs. The names of the fields should be self explanatory. We've seen files where one or more of these fields contain actual copyright information as opposed to a URL.
The Official Artist/Performer Website and Commercial Information Webpage fields may contain more than one item. As a convenience, the first value for each is shown on this display. Additional items may be viewed and edited on their content views.
If any UDURLs are present in the audio file a link will be displayed which will take you to the appropriate content view.
Note that you can open the web page associated with any URL, by right clicking on the field and selecting Open URL.