ReadyNas Duo - I installed PNY OPTIMA 1GB DDR 333 MHz PC2700 Notebook / Laptop SODIMM Memory Module MN1024SD1-333 ordered from Amazon for $29.99 and it works fine. It's improved the Squeezebox service quite a bit. There seem to be some noticeable improvements in Admin menu speed and file copy/open operations but it's not major. I wanted better squeezebox performance and it's been worth it for that.
From RFC 1925: "(3) With sufficient thrust, pigs fly just fine. However, this is not necessarily a good idea. It is hard to be sure where they are going to land, and it could be dangerous sitting under them as they fly overhead."