I am assuming they meant the Sprint Music Manager, but you should be able to copy the music from your old phone to your computer (depending on what phone you had using the USB connection), then copy files from your computer to your new phone. You should be able to do that with any pictures you have on your phone as well!
If that does not work, let me know what kind of phones, old and new, you have.
We cannot transfer songs purchased from Sprints Music Store using usb, They have to be re-downloaded from the music store, IF your new phone is compatable with the music store, MOST are not and you lose all the songs you paid for. This is something Sprint needs to address and offer a download in a format(NOT .KOZ) that we can use on any future device we purchase. They used to allow a pc download but stopped that a couple years ago. I have read many horror stories where customers have paid for hundreds of songs just to lose all them and the moneys paid because they bought a device that is not compatable with Sprints music store. The songs purchased from Sprint are DRM protected and in most cases can only be played on the phone they were purchased on/for.
Check out a fun infographic that teaches you how to increase storage, enhance security, improve battery life and clean your device.