I appreciate the help.
Unfortunately, turning of the "Kopio Tiedostot iTunes Media -kansioon" setting had no effect. Also turning off the keep folders organized setting "Pidä iTunes Media -kansio järjestettynä" makes no difference; iTunes still changes the genre.
As to changing the language, I'm afraid I'm failing to follow the instructions. The iTunes top menu bar does have a "Muokkaa" (Edit) option, but there is no "Asetukset" (Settings) in the menu. The only iTunes settings I can find are through the iTunes menu next to the apple at the top left, the command+comma ones (iTunes -> Asetukset...). I haven't been able to find any iTunes specific language settings, except for the playback language preference.
Looking at this article: http://support.apple.com/kb/HT2242 it would appear that the Windows version has the language option, but you cannot control the MacOS iTunes language separely from the OS language.
Message was edited by: Toivo -- added reference to HT2242
Ah, my apologies. I'm frequently caught out by the inconsistencies between the versions. I'm hoping to get access to a Mac before too long.
In the PC version of the iTunes application folder is a file called ../iTunes.Resources/fi.lproj/localizable.strings. Having switched iTunes into Suomi and seen the genres change I renamed this file localizable.strings FI, copied in the English file from ../iTunes.Resources/en.lproj/localizable.strings then started iTunes again. Genres switched from Suomi back to English
Hopefully you can perform a similar hack on the Mac.
I know it's an old topic, but I figured out a simple workaround. I'm posting it here in case anyone else has the issue.
1). Make sure that all of your classical tracks are labelled 'Classical'. The genre 'Klassinen' should not appear on the genre sidebar.
2). Take one track that you don't care about and change the genre to 'Klassinen'. 'Klassinen' now appears in the sidebar as a new genre.
3). iTunes will no longer try to create the new genre 'Klassinen' because it it already exists. It will no longer localize your genre names.