His name would be pronounced in a Hungarian manner, as he is from Hungary. I'm guessing this means "j" pronounced like a consonant "y" (I'm East European, so I might be close).
I am looking at the notes from one of his CDs (Schubert Moments Musicaux, NAXOS) and it is concise with respect to the artist, he was born in 1952, he studied at the Liszt Academy, he won major international competitions in Hungary and in Australia (no I don't mean Austria) and he has performed in N. America but only in Canada. He is still alive, has recorded the complete Beethoven sonatas (!) and is recording the complete mozart concerti.