How To Import Selected Playlists + Contents From iTunes?

I've had DoubleTwist for awhile but had not been using it.

Upon coming back to it I found the version has changed and I am unable to make it do what I want it to do: Import just selected playlists and their contents.

Not a huge need here: but I want to get away from carrying my iPod to the gym.... just need a few hundred of the choicest...

Maybe the joker in the deck is that most of the playlists in question are what Apple calls "Smart Playlists" - based on criteria instead of explicit tracks.

Are there other apps that people are happy with in this respect?

I'm seeing iSyncr and a few others....

OTOH, maybe I need some User Education vis-a-vis DoubleTwist....