Little lag, a little research, it's all good – Volume Control for Mac Review

Works with snow leopard. Go to system prefs on your mac. Click on sharing folder. Check box next to remote sharing (turning it on). Your computer should now show up on your handheld device. Enter proper user name and pw. (same name as your home folder on the mac). Then you should be good. !!!make sure that the computer and the iPhone/iPod are both connected to the same wifi signal, otherwise won't do it!!!
Review by KariR on Volume Control for Mac.