With the help of Serry's web link, I was able to move Queen from #85 to a tie at #20 for the best selling musical artist. The 130 million estimate, although possibly low, was based on the back of the "Champions of the World" documentary in 1995.
Well, the disturbing thing is that some of the damn users have been trying to revert Queen back to the #85 spot!! This is in spite of the fact many of the sales for the artists on the list are not even properly documented. For instance, they claim that ABBA sold over 200 millions albums, but there is not a single reference to any published article or anything. Maybe they did sell a lot, but the point is that people are trying to knock Queen down and we should not tolerate this!
Here is the link: http://en.wikipedia.org/wiki/List_of_best-selling_music_artists
It really pisses me off that I have to spend inordinate amounts of time trying to fix this.