This is the place. NathanHoweMusic.com contains plenty of sheet music for LDS and general Christian use. A good portion the music is free. You may also want to try these Nathan Howe scores from reputable LDS publishers:
This emotional song for male voice and piano tells the story of the Prodigal Son from the perspective of his brother. MP3 and sheet music are available for instant download.
Peace Be Unto Thy Soul is a shimmering modern piece for a cappella SATB choir. It is a promise of peace in the midst of affliction. Beautiful dissonant harmonies and dynamic contrasts make this a great choice for moderate to advanced SATB choirs. Peace Be Unto Thy Soul is available exclusively through HolySheetMusic.com.
(audio from Jackman Music)
This Christmas selection is an exciting addition to the repertoire of any church or school choir. The classic lyrics by John Menzies Macfarlane have been set to an exciting new tune in mixed meter. A supportive piano part makes the flowing lines and chromatic harmony approachable for most SATB choirs.
When Ye Shall Receive These Things is a piece for accompanied SATB choir. The music features accessible, modern harmonies for choral singers over a beautiful flowing texture in the piano part. It received an honorable mention in the 2013 Music Composition Contest sponsored by yourLDSmusicstore.com, and it is a part of their compilation titled Reflections. You can buy the entire book or this piece alone.