Ideally you want an actual mechanical and electrical connection between your components, not just a solder bridge. Maybe not noticeable in a lower power analog domain, but I wouldn't be comfortable at the digital end.
Here are some interesting options to set up a portable network/music server...
Viper's setup with the Logitech Squeezebox and Apple Airport Express kinda planted the idea in my head. Just looking at alternative ways to create something like that.