sansa E260 downloading

when I download books on CD the order that I want them in always goes # 1 then #10 and all the #1??? then #2 and so on how do I change the way they install on my MP3

Change the numbers so they’re all the same length, adding extra zeroes where necessary (i.e. “1” becomes “01” or “001”, “2” becomes “02” or “002”, etc.).

Thanks I will try that and see how it goes