I used this player for 9 months. I used it almost every day but never for anyting rougher than walking. One day when I was switching from FM Radio to MP3 it shut off. I was able to turn it back on so I wasn't worried. Then one day it shut off when I was switching from the FM Radio and wouldn't turn back one. The warrenty expires after 90 days.My first player was a RIO Sport but it wouldn't play audible books but it worked so well I replaced it with the RIO Forge, BIG MISTAKE!