Currently Being ModeratedMay 8, 2013 6:58 AM (in response to blckhed)
Welcome to the Apple Support Communities. You can easily get your slideshow to YouTube. The following article will assist you in the process.
The area you are looking for is: Choose Share > Send To > YouTube
Currently Being ModeratedMay 9, 2013 10:00 AM (in response to norm123)
I came across these or similar instructions in the Keynote Help, but wasn't able to make them work when uploading to Youtube, because I tried doing it directly to the Youtube site. I imported the video made with Keynote into iMovie, and then added the soundtrack. I then discovered the ability to upload from iMovie directly to Youtube, and now, with your suggestion I realize the same can be done from Keynote.