dupeGuru Music Edition is a tool to find duplicate songs in your music collection. It can scan filenames, tags, or contents. dupeGuru ME is efficient. It can find your duplicate files in minutes, thanks to its quick fuzzy-matching algorithm. dupeGuru ME not only finds filenames and tags that are the same, but it also finds similar ones. For example, dupeGuru ME, with the right settings, can determine that "The White Stripes - Seven Nation Army" and "White Stripe - Seven Nation Armies" are duplicates. dupeGuru ME is customizable. You can tweak its matching engine to find exactly the kind of duplicates you want to find. dupeGuru ME is safe. Its engine has been especially designed with safety in mind. Its reference directory system as well as its grouping system prevent you from deleting files you didn't mean to delete. It lets do whatever you want with your duplicates. Not only can you delete duplicates files that dupeGuru ME finds, but you can also move or copy them elsewhere. You can also easily weed the bad duplicates out, thanks to the Power Marker.
Boom is a simple volume booster application that lets you boost the volume of your Mac, your music, and video files. Changing the volume with Boom is the same as changing the volume normally. It can boost the volume of videos on YouTube or Hulu, your music playing on iTunes, voice applications like Skype and iChat, and your favorite Games.
BackPlay a program that plays music files from a folder in the background. At login, it scans a directory called "BackPlay" under the user's Music directory, and begins playing any music files it finds there in random order. BackPlay is independent from iTunes. It can be paused from an icon in the status area.