IPod is full ! How do I update it?

Question

Are you clever enough to solve my mystery?
iTunes has announced its library is bigger than my iPod's 60GB hard drive. It has helpfully created a 60GB selection of my music (called "MyIpodsName Selection", which it has uploaded to the iPod.
Problem is, when I add extra CDs to iTunes, these never get included. I'd like a way of creating a different version of "MyIpodsName Selection" whenever I wish.
The only way I can find to do this is to delete the iTunesLibrary file, then reindex my entire collection, wipe the iPod and start again.
Is there an easier way of doing this?
Thanks,
Tuna

Answer 1

In the meantime, I'm still hoping that someone will tell us how to recreate the "MyIpodsName Selection" file.
You don't need to use that file specifically.
If the library is larger than the iPod, iTunes simply creates a playlist to fit and selects Sync selected playlists. The file is named after your iPod.
Create a Smart playlist and limit it to 56GB.
Select the iPod in iTunes.
Click th eMusic tab.
Tick Sync music and tick Sync selected playlists.
Select this new smart playlist.
iTunes will sync this playlist.
To change the music on the iPod;
Select this playlist
Select all the songs on it and press Delete. It will remove and fill up again.
Plug in the iPod to sync it.
Or create one or more playlists and select those to sync.
Make sure they stay under the size of the iPod.
Add/delete from those playlists to change the music on the iPod.