Having forgotten how to use my Rio Central (!), and then coming here to nose around a bit after a long absence, I notice the FAQ says the Rio Receiver doesn't play songs in the album order. Actually it will/it does if you include the track number in the song title e.g.
01 - Sayuri's Theme.mp3
02 - The Journey To The Hanamachi.mp3
03 - Going To School.mp3
04 - Brush On Silk.mp3
05 - Chiyo's Prayer.mp3

...and so on for "Memoirs of a Geisha" CD. All my albums have been ripped in this way using Winamp (I've never used my Central's ripping feature so dunno if you can do this with it).

What is somewhat odd with both the Rio Receiver and the Rio Central is that the track numbers don't appear when playing i.e. the "04 - " for Brush On Silk doesn't appear.

But everything does play in correct order ripping/naming in this way. Maybe everyone here knows this but if not...