Put said content on CDR then rip to MP3 and onto your player.
This is a well worn path from iTunes as well as noted many times by many people because... it works.
Bob
audible.com doesn't list my Sansa e280 in its list of supported MP3 players. Is there a work-a-round so that I can download audible files to the Sansa e280? If not, does anyone know of other websites that sell books in MP3 format that I can downloan on my Sansa? Thanks.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic