WANTED: Tool to copy MP3Tag from one Song to another


I merged my libray with that of my brother and right now I have 1000 double enties.
Now I deleted all the songs from him where the quality was lower than mine.
Unfortunatelly his files are not so acurate in terms of lyrics, genre & cover.

So I look for a tool which can copy the complete tags (incl. lyrics & cover) from mine to his file, which has a better quality and after that I will delete my old file. Maybe a batch or commandline tool or with a UI. The best solution would be something what I can start from itunes.

At the end I have to import the ratings & playcounter which I archive after every itunes use.

Has someone a suggestion ?