How can I delete a song on my iPod in iOS 5? It won't unsync!

Question

I have tried numerous times to unsync several songs from my iPod touch (4th gen, iOS 5), but they just won't be removed! It seems to be ones that I synced with over the cloud. Now that I changed back to backing up to my computer instead of the cloud, they were synced by the computer and I now have two copies of the songs. Even if I uncheck them, they don't go away.
Any help is appreciated!

Answer 1

There are a few way you could do this that do not involved deleting from iTunes. The default iPod setting is automatically update with iTunes when connected. You can keep the automatically update setting and select "automatically update selected playlists only" then all you need to do is remove the song from the chosen playlist(s) and update, it remains in your library should you want to add it in future.
You could also set your iPod to "manually manage songs and playlists" and add or delete whatever you like from it without affecting iTunes
Another way but more difficult to manage is to choose the "Only update checked songs" option in the iPod Preferences. By un-checking a song in iTunes, it will not be updated to the iPod and if already on the iPod, unchecking the song in iTunes will remove it from the iPod during the next update with iTunes.
For info:
The iPod offers three ways to transfer music from your computer. You can select one of the following update modes from the iPod Preferences menu in iTunes (Edit=>Preferences=>'iPod' tab):
1) Automatically update all songs and playlists. This is the default mode, in which your entire music library, including playlists, is automatically synced to your iPod. If the music library on your computer exceeds the iPod storage capacity, you are prompted to select a different update method.
2) Automatically update selected playlists only. With this option, iTunes automatically copies the playlists you have selected to the iPod when you connect it to the computer.
3) Manually manage songs and playlists. You can also choose to transfer music to the iPod manually. This allows you to drag and drop individual songs and playlists from iTunes to the iPod.