no_skip_when_shuffling.js is a script for iTunes for Windows that unsets the skip when shuffling setting on all songs in a playlist. It was inspired by an AppleScript which does the same thing for iTunes on Mac OS X.

Skip when shuffling prevents songs and podcasts from playing nice with the iPod Shuffle. It won't play them when in shuffle mode, and more importantly, Autofill won't see them at all. Worse, iTunes sets skip when shuffling by default on new podcasts when they're downloaded. This script provides a workaround.

I have a Smart Playlist for the podcasts I haven't listened to yet. Every morning, I update my podcasts, then run this script. When I plug in my iPod, Autofill syncs it so that it has only the podcasts I haven't listened to yet.

You can download the script, or copy and paste it from here:

var playlist_name = "Podcasts";

var iTunes = WScript.CreateObject("iTunes.Application");
var sources = iTunes.Sources;
var playlists = sources.ItemByName("Library").Playlists;
var playlist = playlists.ItemByName(playlist_name);
var tracks = playlist.Tracks;

for (i = 1; i <= tracks.Count; i++) {
    tracks.Item(i).ExcludeFromShuffle = false;
}

Set playlist_name to the name of the playlist you want it to change. Then, make sure the file's extension in Windows is .js, and double-click on it. It should be run by Windows Script Host (wscript.exe). If it's not, change the File Type for .js files in Explorer's Folder Options.

This script uses the iTunes COM SDK for Windows. That page has since disappeared, so I used a Microsoft TechNet article on scripting iTunes - Microsoft, weird, I know, but the article was invaluable. You can also still find iTunesCOMInterface.h on Google Code Search, among others. Finally, RipperDoc's tutorial was helpful, as were Otto's and Doug's collections of scripts.