CustomizeMii is a 100% legal custom Channel creator for the Wii.

Changes:

Added BNS conversion (Mono and Stereo, with and without loop)
Fixed MP3 conversion (some files didn’t convert)
Lz77 checkbox is now ticked by default
Removed Lz77 compression of sound.bin as most sounds will get bigger
Added ability to insert DOLs from any channel WAD
Added ability to re-add the interal DOL (To switch the NAND Loader)
Added ability to extract the contents, DOL, sound and all images
Added displaying of approx. blocks to the success-message
Deleted some functions of the complex forwarder as they weren’t working properly
Some bugfixes and improvements

http://wiibrew.org/wiki/CustomizeMii