I have one MP3 song belonging to, let's say, album1. The same artist of album1 put this song on album2, which is a compilation album of the greatest hits. Anyway, there's one song belonging to many albums, and I don't know how to add this song to the compilation album, without having to get exact same versions of the song with different tags.
Detail: On album1, this song is number 7. On album2, this song is number 2. I also want to tag it with different numbers.