JMusicMan
Music Manager focusing on ID3 tags and internal player
... and what I feel is intuitive but it could use some sprucing up with nice graphics and maybe more functions. My goal here was to start something and see it grow. And most importantly pay it forward for all the open source that I have benefited from.
It makes use of some other open source libraries like JAudioTagger and JAudioLayer. Without which this would not have been possible for me to start.