i'm using a PS3 as a media server with an external harddrive. but i don't really know it's features so i'm using the brute force method ...
i copy and recopy my mp3's into separate folders so i can play a folder at a time with different themes - depending on my feeling at the time.
e.g. i have a folder for rap, rock, ballads, etc. ... and one that has everything i have.
i use the ps3 because i like being able to slideshow pics (again, folder style) while listening to music. i kinda like listening to music while scrolling pics of my family.