hello
Maybe you are displaying both channels installed on Wii and channels installed on emuNAND?
If it's the issue, it's easy to disable the Wii channels (you shouldn't have a lot, as Wii memory is limited).
If you don't want to disable one of the sources (Wii or EmuNAND), I don't think there's a way to hide only one channel, unless you delete it.
The current category/favorite filtering system is only based on the TitleID, so if you add a channel to a hidden category or set a favorite star, both locations will be affected.
Maybe I could add an option to set priority to either Wii or emuNAND on duplicated games (like it's done for gamecube games with SD and USB)
If you have only one source (Channel on Wii, or EmuNAND), I don't know why you have VC titles displaying twice.
Only VC, not wiiware?
All VC, not only some of them?