Thanks - don't know why I didn't think of just connecting phone to the computer and moving them that way. The music files I'll be transferring are already backed up on my computer (Windows Media), and photos are on Google Drive. I'm quite familiar with SD horror stories as I lost all SD content a couple of years ago.
UPDATE-
I put in a larger capacity SD card and successfully moved what was on the old 8GB card to the new 32. I tried to move the audio files from the internal to the SD but I'm having no luck with that. I tried it through my computer, and thought I'd moved them all from the MUSIC folder on the phone to the MUSIC folder on the SD card, but they either never got there or I'm just not seeing them. And...they still are showing as on the phone. I've done some searches to find specific ones, and they show up where they're supposed to be in the search, when I look on the computer, they are still where they are NOT supposed to be. Very strange. And moving them thru the phone is confusing, as they seem to be listed as individual tracks, and not by album. At least most of them are...very confusing. If I do try to move them from phone to SD and they are already on the SD (even tho I"m not seeing them...), will it tell me while I'm moving them that it's a duplicate, or will I wind up with two copies of the same thing? THe audio files are bringing me too close to the 16G on the phone, so I"ve gotta do something (other than getting a larger capacity phone),