We've a fairly wide "non-English" section to our collection, the "middle European" section of which has already been touched on; however if you also enjoy classical music I'd strongly recommend "The Bartok Album" (but I need to look up the group . . sorry". Other than that, three outstanding recordings are:Pancho Alvarez "Flocencio, O Cego Dos Villares" (Galician traditional music; see the article on FolkWorld Issue 12 at http://www.folkworld.de/ for a description; this was their "album of the year" for 1998; richly deserved)
Svart Kaffe (only have one recording, whose title translates as "French Roast") which we bought from the band and I've never seen listed anywhere; Swedish music with French and African influences.
Ali Fakar Toure with Ry Cooder - "Talking Timbuctoo" - much acclaimed when it was released, and has certainly stood the test of time in our collection.
OK, the last two are "cross-cultural" efforts, but they are ones in which the "parent" culture (Swedish and African respectively) remains paramount.
G.