Problem 1) After you upload a file, the metadata in the Search->Browse window is not always updated. For example, the new creator does not appear in the list of choices. You need to logout and login to get the new artist to appear.
Problem 2) Also, a newly uploaded file does appear in search results after you add it. Sequence of steps: open search window, browse to the artist you are about to upload. Upload the new song from the artist. The new song does not appear in the list of songs by the artist in the search window. It will appear once you search again. (This problem is lower priority than Problem 1)