I know this sounds crazy, but a lot of people, including myself, like iTunes. Even though I haven't bought any music from their store whatsoever, I still use it to play and organize my music. I hate it for it's bloat and sometimes crappy performance, but overall it does what I want it to. I like that when I get some new files, I can just import them into the library, and iTunes will automatically sort my folders and tag my music. I've started using Songbird more, which reads from my iTunes library, but for importing and organizing the library, it's iTunes all the way.