My calling in my ward right now is the choir director.
I actually really love it. It's taken me a year or so to get the hang of it and feel comfortable. There are many in the choir that are more 'musically inclined' than I am, but they forgive me and we make it work :)
One of the things that I've found to be difficult is trying to find music that is both inexpensive and beautiful. And since there are MANY that hold this calling, I wanted to share what I've learned from others and with time in this calling.
1-See if you can find what past directors have done. It may have been long enough that you can repeat their programs or music. Ask past directors where they have their music stored. Even if music is free-copying music can still get expensive.
2-If possible, meet with the other directors in your stake and figure out a way to share music within wards. We are still working on this in our stake.
Here are a list of websites that I've found that have great FREE music:
If you are looking for something specific and can't find it-here is the site where I have purchased music before: http://www.ldsmusicsource.com/
Good luck! I also want to say that having your choir sing straight out of the hymn book is just as great as any of these arrangements. Just simply mix it up by having each verse sung differently, A Capella, etc. Also if you are just starting out, try the Hymplicity books. They are also great.
Let me know if you know of any other websites that you use. Happy singing!