I have already written about Floola being an excellant replacement of Itunes along with google calender support few months back. I wont be talking much about the features and why you should use it. You can just read my previous post about floola.
You can read the following posts if you want more details.
Floola supports almost all features offered by iPods including photos, artwork, podcasts and smart playlists!
It automatically converts any incompatible audio or video file so that you can copy almost any file to it. It allows adding youtube and myspace videos with a single click. Now it even makes it possible to keep your Google calendars synched!
Version 5.0 released, recent changes: