For some mp3s with variable bitrate, a wrong length is detected. Consequently, the values for the progress bar are faulty and the playback stops, when one seeks outside the real length of the file. Please note, that mplayer alone detects the correct length of the file and seeks correctly. I do not know the internals of kplayer, but it seems that either the media length is incorrectly queried by kplayer (maybe it queries a nontrustworthy data source such as an id3tag) or it uses its own algorithm to determine the length (which in this case is flawed). Note, several other command line tools were able to correctly determine the real length of the example file. If you want, I can upload said MP3 file, however it is copyrighted music. Please fix this error. It makes KPlayer impossible to use as an MP3 player.
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