Well MediaMonkey is the right software for you if you think that your music library is just a mess, with music scattered at various locations. MediaMonkey helps you in properly organising your music. You can Organize, browse, or search music by Genre, Artist, Year, Rating, etc., and never waste your time trying to find mp3s you know you have.
Media Monkey will automatically search your drive and scan for any other media managers and audio files. Take your pick from popular formats like MP3, to more obscure ones like MPC and FLA. Once detected, the monkey prepares the file for organisation. Also you can Lookup missing information and album art online, tag almost any audio format, and automatically rename/re-organize tracks on your hard drive.
MediaMonkey will play all music tracks of yours at same volume level even if some of the tracks are louder than other, also you can synchronise your music with a portable media player like iPod, iPhone and other devices.