When I view an opus file info using Alt+3 in Winamp and then closing the File info window with [Cancel], the file handle remains open in Winamp and blocking any file renaming/moving in File Explorer. Any attempt with the opus file results in "The action can't be completed because the file is open in Winamp" error.
I have exit out of Winamp to perform file operation on the opus file.
Thanks for a great plug-in!