Changing mp3 folders

Hi, I own a KRC 369 unit connected to a KDC-CPS89MP CD changer. I play mp3 CDs in this combo unit. My mp3 CDs contain folders. However, when I hit the disk change button, it moves onto the next disk instead of browsing the next folder on the same CD. How do I address this problem? Also is it not possible to display the name of the song playing on the CD? Would appreciate your response. Thanks in advance.

I forgot to mention that the devices mentioned are all of Kenwood make

are there up and down arrow buttons on ur headunit? on my JVC headunit it has the forward and reverse skip buttons and above them are up and down arrows that change folders on mp3 CDs... they also double as navigation through the settings menu

I have the Eclipse 5435 and mine is the same as the previous post, I use up/down arrows to jump from folder to folder. So you should look for any buttons with arrows. Check your manual too...it should be possible to flip between folders.