Make one unified RonCo(tm) WeiDU installer that covers all bases for all modders/players for all platforms with tispack tisunpack sox and oggdec all part of weidu, translated into OCAML...
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(just waiting for the bigg's brain to stop exploding and listening intently for the number of swearwords I can learn in Italian
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Look, if best practice becomes "send people to the WeiDU site and have them download what they need", I think packing mods could get really easy really fast - just package all mods for Linux and send users to the sites for tisunpack, oggdec, sox, etc. and let folks copy whatever wherever. The only problem with that is we have troubles with folks not being able to handle an NSIS or winrar self-extracting .exe installer, let alone deal this $PATH or %PATH%. Heck, folks even have a hard time with "turn off antivirus and disable UAC when installing".
As for modders trying to package stuff up, I agree that conversion to wavc and adding .sh materials to files (or even fancier - creating those .bat files via inlined based on the OS determination) would be good. I am all for a simple packaging solution. The challenge is always going to be mods that can't/won't be updated, and folks who won't go back and change their audio. But for new updates/new mods on G3 and for setting up tutorials, heck, if you guys think it is better to toss some lines in a readme and drop materials from that package, I am not going to get bent out of shape.
If those extras are really just for me, I say drop 'em and send me links to the original stuff, and I can work from there. Or better yet, put things like that up as specific links for download into the tutorials or into a new tutorial, because someday someone might want to package things up for more than one OS. I am easy. And relatively cheap, too.