iTunes won't let me drag and drop songs into my iPhone

Thanks, that would work, but I won't be able to do it, because I just replaced my hard drives, and had to reinstalled and redownload everything, so my iphone is technically "synced to a different library". I don't want to erase my phone's library and replace it with the current one.

If I choose to wipe the phone's library, will I lose my custom ring tone as well, or does it just wipe the music?

well unfortunately I think it's unavoidable. Thanks for the help.