This script will rename the selected tracks in iTunes with their filenames (minus the extension).
There is no accounting for track numbers that may prefix the filename.
To remove characters from the beginning of tag text try using the script Remove n Characters From Front or Back.
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Correct song titles listed as "Artist - Song Name"
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Search YouTube using tag info from selected or playing track
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Search for lyric sites with Google using info from the current or selected track
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Open the iTunes Media folder in the Finder