Is there are free, simple app for itunes playlist mixing

Hi, just as the title says. I need a very simple application that'll just create a seamless blend in between songs on my itunes playlist?

Thanks in advance

Err, shuffle? Mark the tracks for gapless playback and you're away.
If you need to play in a specific order you'll need to add them to the playlist in the order you need and then just play.

Yes there is.

It is called shuffle.

Incase you do not know how to get to it, look at the bottom left of your iTunes, there will be 4 little buttons.

The one 3 over from the right (2 over from the left) is the one you want to click.

If that is not what you are looking for, there is also Genius.

Genius makes playlists for you out of the songs in your library.

There are several apps and plugins made be freeware developers (****, even some firefox extensions) that will blend your playlist based on key, tempo, etc... but they work about as well as Genius (which is to say "not very well at all, Computers aren't very good DJs). Since Genius is already there (unless you need to update iTunes), use that. It's a pain in the ***, but so are the rest of them.

Otherwise, iTunes regular old shuffle feature actually does a lot of that for you (you can adjust it in the references menu), so you may just be better off using that. If you want a professional (DJ-quality) mix, you'll pretty much have to make it yourself ahead of time.