player doesnt show files

my player doesnt show the files but when I hook it up to the computer it says they are there.

Whats going on?

What kind of files are they? Are they a supported format?

@delightfuld100 wrote:

my player doesnt show the files but when I hook it up to the computer it says they are there.

Whats going on?

Did you get your songs from iTunes?

Check this.

they are audio books from a cd

This might be a stupid question

Did you rip the cd first before transferring it to the Sansa? if yes, what are the file format?