I have both a MacBook Air & an iMac on the same network. I'm using my iMac as the host with my iTunes library on it & it's being shared with Home Sharing. I'm wondering if there are any lightweight clients that simply connect to a Home Share on the same network to play from it? I'm never going to have a music library on the Air itself, so I don't need to run iTunes if I can avoid it.
I don't believe that this is possible. The only things that can connect to an iTunes Home Sharing library are iTunes its self and iPhones (As of iOS 4.3).