Well folks... call me lazy or whatever you want to call me but I am WAY impressed with a new site I have run across and have signed up for.
I am currently on the trial membership with full intentions of going with a full membership soon.
They have a good list of songs and add a new one each week.
Each song has soundtracks in 2 or 3 keys, a vocal track for each individual part, a vocal track with all the parts together, chord charts, an mp3 of the song etc.
You can create worship sets online and add an account for your vocalists for free. They can then go online and hear and learn their part before practice. They can be added as a premium vocalist so that they can download the songs rather than just listen for $5.95 per year.
Man... this is great.
Check it out if you deal with music in a church.
http://www.praisevocals.com