SuperSync makes it easy to create a main library, and have a subset on computers and laptops around the house. By offering an easy way to visually compare and merge multiple iTunes libraries, all music, movies, and playlists can be synced across all devices. Any new content that is added on one computer can be uploaded to the master library.

Use SuperSync to:
* Keep track of all music across multiple computers – Mac OS X, Windows, and iPod
* Compare and merge any two music libraries
* Move music, videos, and playlists from one iTunes library to another
* Export all or a subset of a library as a well-organized directory of tracks
* Find partial albums, duplicates, missing tracks, corrupt files, and other common music library problems
* Intelligently import media from a hard drive, iPod, or network drive without duplicates
* Easily move a music library from Windows to Mac, Mac to Windows, or any combination
* Access a home music library from anywhere – upload/download songs, movies, and playlists
* Share a common library with multiple iTunes users on a network drive
* Access your MP3′s and playlists from Tivo

More information in the full release.

SuperSync 2.3 added a number of product enhancements, including:
* A new help system – searchable and also online
* Improved transfer statistics
* Made iTunes playlist transfer more intuitive
* Added compatibility for access by other DAAP music players such as Rhythmbox
* Improved ease-of-use of some features (such as the filter table.)

You can download SuperSync and check out the trial mode for free and if you like what you see it is $29.00 for two machines (after all, it doesn’t make sense to ‘sync’ with less than two machines), $39.00 for five, and $59.00 for ten.

The TiVo support is nice, but it appears it only works with MP3 files. If you keep your iTunes collection in another format, such as AAC, it won’t work for you. (Of course it won’t work for DRM protected music in any format.) Since the TiVo only accepts MP3 files, servers need to transcode other formats to MP3 before sending them to the TiVo. Since I prefer AAC to MP3, I use Dan203′s plug-in for TiVo Desktop to play the AAC files on my TiVo. (Mac users can do something similar with LAME.)