[Xtreme2damax]

Customize Mii is a homebrew application that can be used to create custom channels for the Wii. Version 2.2 of Customize Mii was recently released, here is the associated changelog for this release:

Quote

• Fixed some bugs with the preview window
  
• Fixed Complex Forwarder in combination with Waninkoko's NAND Loader
  
• Fixed saving of base WADs
  
• Fixed saving of WAD after sending it to the Wii
  
• Fixed CMP TPL code (thanks pbsds)
  
• Added conversion to IA8 (thanks pbsds), IA4, I8 and I4
  
• Fixed conversion from IA8 and I4
  
• Fixed some general TPL bugs (format detection, ...)
  
• Added additional paths to the Complex Forwarder (max. 16)

Read about it here.
Download: Customize Mii v2.2