Just copy and paste more files from the internal memory to the external memory card. But be sure that you then delete the songs (that you have copied and pasted) from the internal memory card–maybe you forgot to do that.
Also, note: most people aren’t here providing “real time” assistance–and so it can take some hours, or even a day or 2, for people to respond to you.
SanDisk can help as well, including via free telephone call from you:
