We have tested adding files using the iTunes "Add To Library" feature.
For PCs "Add To Library" has a keyboard shortcut, Ctrl O
Once added, you can add the file to existing playlists or why not create a new one covering, for example, ITSM (Capacity/Problem/SLM) areas, another for Change/Lean/Projects and a catch all. Use the 'Shuffle' feature to vary play order! Maybe add a few music files to break it up!