HOW-TO:Updating to OpenELEC 3.0/Path Substitution

Path Substitution Unofficial Clarification
XBMC allows you to configure path substitution. This feature lets you translate a system folder to any arbitrary alternate location e.g. playlists to a central NAS server

The most popular application of this feature was with the XBMC library art cache. In Eden users could maintain a single central store of art cache that all XBMC installs in a home could share.

In Frodo this feature is no longer supported or recommended however does that mean it doesn’t work... sort off... here are the details.