Is JMF any good if I simply want to find out playback durations?

Hello.
I created a little tool for dealing with playlists of audio tracks. For the user's convenience I display all entries of a playlist in the GUI's JTable, where title and duration of each audio track are listed.
Of course a user would like to add audio tracks to an existing playlist. So when the user selected a track to add, the application should try to get the song's title (meta data) and the duration.
Obtaining the duration of a clip is my problem. Is it better to take the JMF for getting playback duration or to implement everything from scratch. My application is not meant to play audio at all, so most of the JMF would be useless for me. But parts of the framework seem to make it quite easy to get playback durations.
What do you think?
Wan-Hi
P.S.: My program is supposed to recognize WAV, AU, AIFF, MP3, OGG and AAC formats.

JMF isn't a great option for that. It's large, problematic to install, slow to open files, and doesn't support all those formats. QuickTime for Java would support most of them, but it's even bigger and slower. It will take some leg work, but you can probably find most of the pieces you need in free and open source code.

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