Just wanted to post my discovery of this neat little app, DoubleTwist, for Mac OS X.

http://www.doubletwist.com/dt/Home/Index.dt

It can detect a variety of third party devices and allow you to transfer media from your iTunes library to them, whether they are supported by iTunes or not.  I believe it also will encode videos before transferring.

The Sansa Clip is not officially supported; however, I can verify that it works quite well.  Simply sync your iTunes playlist, drag and drop to the Clip in the UI, and it will transfer - simple as that.

Has anyone else tested DoubleTwist with other Sansa products, or the Clip?  What was your experience like?