How do you pronounce 'semper fidelis'?

The English equivalent of the phrase 'semper fidelis' is the following: 'Always faithful'. The pronunciation of the motto is as follows: SEHM-pehr fee-DAY-lihs. The phrase has been the motto of the United States Marine Corps since 1883, in honor of its members, who see their commitment to Corps and to Country as lifelong. And it also is the title of the official march of the 'President's Own' U.S.M.C. Band.