I did sync the ringtones and have the manually manage music checked, so when I sync one the ringtones, it ends up taking out my music playlists ONLY FROM THE iPHONE (still in iTunes' playlists and on my computer) and my apps.
Nothing in your iTunes library can be erased via the iTunes sync process.
Would think if it backed up, it would still have my music in playlists on my iPhone, no?
No iTunes content is included with the iPhone's backup - no music, tones, audio and print books, podcasts, movies, tv shows, and apps.
Can you tell me why, then, I WAS able at one point to just drag a ringtone after being created from the iTunes ringtones section into the iPhone ringtones section and now I can't?
I'm not sure, but it is my understanding this has not changed. Tones cannot be manually managed.
If I check NOT to manually sync my iPhones music, then I can't independently add a song to my phone, can I?
Sure you can. You can add the song to one of the existing iTunes playlists already selected to be transferred to your iPhone under the Music tab for your iPhone sync preferences with iTunes followed by a sync. To remove a song from your iPhone, you can remove it from the playlist in iTunes followed by a sync, or if you want to remove a song from your iPhone without removing it from the playlist in iTunes, select sync only checked songs and videos under the Summary tab for your iPhone sync preferences with iTunes. Deselect or uncheck the song in the playlist in iTunes followed by a sync. To add the song to your iPhone again later, reseletc or check the song in the playlist in iTunes followed by a sync.
I think that is why I chose to do that. I cannot fit my entire music colleciton on my phone as it is, so I just do as much as possibly and leave a little space for additional photos, etc., as I'm using my phone daily.
Syncing music does not require transferring your entire iTunes library. Under the Music tab for your iPhone sync preferences with iTunes, there are two options. Entire music library, or selected playlists, artists, albums, genres. With the 2nd option selected, you can select the individual iTunes playlists, and/or artists, albums, genres below folllowed by a sync. To remove an individual playlist from your iPhone currently selected, deselect the playlist under the Music tab followed by a sync. The same for a select artist, album, or genre. With sync only checked songs and videos selected under the Summary tab for your iPhone sync preferences with iTunes provides additional options.
There are more options available with syncing music, movies, tv shows than when manually managing music and videos - especially with an iPhone that does not support disc mode which provides for transferring iTunes content to an iPod from more than one computer. I've never manually managed even with my iPod which seems so archaic and Windows to me. You can make the various changes in iTunes and/or under the various tabs for your iPhone sync preferences with iTunes followed by a sync so that all your chosen changes are done at once with the sync process instead of doing addiing/removing some items manually, and others via syncing.