mobiblu 2gb cube dah-15001 folder help

on the 2gb dah-1500i, i have simply dumped folders onto the player. when i choose a album i can listen to all the songs no problem, but once the last song in the album finishes, and i click the forward button it simply goes back to the first song in that album, rather than going to the first song in the next album after it. this means i have to manually choose the next folder, this gets annoying after a while. i have not put the setting on repeat or anything just normal. i tried to make one main folder and put all my albums into that main folder but still no luck. please help!!!!! cheers