MyMPx.org - Playing from different folders

Now that my MPx player is working again, I like to store all my MP3s in folders relevant to the band performing them and the album they are from. The problem that I have is that sometimes I like to listen to an album in it's entirety but other times I want to randomise all the tracks stored rather than the tracks in each individual album folder. Is there anyway to do this as the only way I've managed to do it so far is have all the individual tracks in one folder (my main music folder) and randomise them. I have another album in it's own folder but I can't seem to access that one at all. My player is a 2GB nano clone, Samsung 631 K9WAG08UIA PCB0 and ATJ2085w. Cheers in advance