rumjabras

I have just acquired a sony walman nwz-s738F and have encountered two problems that are not described in the manual. First: when I drag a whole album from the computer,it comes out as an unknown album, even when i rename it prior to tranfer to the machine. Secod. After I have transferred several CDs, the machine is palying all the first tracks, then the second tracks and so on. How do I get the player to play each album separately?