Not a lot of difference between LW Basic & Pro.
Arrange search results by size (click on link) will help you arrange search results so you can view their sizes & know which are good or bad. Stay away from files below 2,000 KB or 5,611 or 3,787 KB or 3,462 KB.

But if you cannot even click on links to see what you need to do to add songs to iTunes then nothing more for me to say. Another method is to Disable LW's media player under options. Then Launch the music files you downloaded.