I noticed someone asking for this particular kind of app for Mac OS X and didn't have much else to do tonight so after a few hours of coding:
http://www.acc.umu.se/~magu/WiiloadGUI-v1.0.dmg
Code:
WiiloadGUI v1.0 by magu
A wrapper for wiiload by Team Twiizers [http://bootmii.org] which allows for loading of dols/elfs/zips directly from Finder. The app remembers your Wii's ip-address and autoboots on drag-'n-drop or when invoked through file association. The bundled version of wiiload is the precompiled sox-binary included in the hackmii-installer v0.5.
Please send bug reports and feature requests to the mail address specified in the about box in the program. This app is compiled with the 10.5-SDK, so it should run on Leopard and newer. If you find this program useful, please PayPal me the equivalent of a cup of coffee or the like ...