I wish I had found this thread at the beginning of this evening.
- I bought my first books through iTunes for my son's birthday. And I was helping my son add these couple of books to his iPod Touch on my wife's computer.
- I thought books needed to be synced. So, I selected "Sync Books" in iTunes (I ignored the warning) and not only was my son's music erased but then I could not add any playlists to the iPod Touch to properly put back his music.
- This seemed like an OS glitch so, I did a clean restore of the iPod Touch.
- I again selected "Sync Books" in iTunes and again I could not add my son's music with playlists to the iPod Touch.
- So, I did a second restore.
- After much searching on the web, I found this thread. And this time I followed the instructions from berlingoodman's post;
"Check "Transfer purchases...."under File in iTunes
Drag and drop book, PDF, etc. from iTunes Library to Books under iPhone."
* Then the books transferred to my son's iPod Touch without syncing!
After this I was able to sync apps and still manually add all the playlists/music to my son's iPod Touch which he prefers! (Two hours total were spent on this.)
* The problem imo is that Apple has completely tied syncing books with syncing music. It would be nice if users had the option as with apps where they can be synced but at the same time music can then be added manually.