I made a wiki (long time ago) with some links, and a installation guide.
http://wiki.gbatemp.net/wiki/WiiSX_compatibility_list_%28beta_2%29
As for sub channels file .sub, I never got it working.
I don't know if it's loaded at all (though, it's said in an
old post about wiisx beta2 on emulatemii that it's compatible).
edit:
Oh, all links were on megaupload.
I'll repost them on filetrip later.