I have encountered a problem with some mp3 files. The metadata that I have entered under dc.Title is not displayed for several mp3files (all from the same source). Instead, an incorrect title with symbols is displayed.

In expert mode during build, the following is given for the problematic files: 'util::hard_link: unable to create hard link' And 'doc::add_utf8_metadata: warning " " wasn't utf8.' 

Is there any way to fix this?