TkTag is a Tk/Perl application that allows the user to edit and modify ID3 headers in mp3 files. In addition to editing and modifying tags manually, you can also set up input and output masks to either create tags from filenames, or rename files based on tag fields.
First of all, the company that I am co-oping with decided to use Perl as the main language for constructing test suites and custom testing tools. At the time, I knew little of Perl, so I decided that if I started some small project in my spare time at home, it would make learning Perl all that much easier. After a week or so of work, this app was born. Hopefully someone will find it useful.
Well... If anyone finds this useful, I'm sure that I can find more features to add. First of all, I'd like to port the app to GTK+, but that assumes I have the time to learn GTK+. I picked up a good book on the subject, so hopefully it won't be too difficult. Also, I'd like to add more support for constructing and playlists modification.