Maybe this Tool:
Name: Write UNSYNCEDLYRICS to file
Path: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
Parameter: -windowstyle hidden -command "Write-Output ''$regexp($regexp($regexp($replace(%unsyncedlyrics%,'',''''),^\w+\|\|,),\r\n,'' ''),''\s''$,)'' | Out-File -FilePath ''$replace(%_folderpath%%_filename%,'','''').txt'' -Encoding Unicode"
-Encoding Unicode is the default for PowerShell 5.1 so is not needed in the command if you use PowerShell 5.1.
Other encoding can be specified. See here.
For later PowerShell versions, the encoding options and the default may be different.