Is there a remote desktop solution that will transfer sound output to the client? I'm looking for a secure and hopefully free remote desktop client that will allow me to interact with my Mac OS X 10.6 machine from a 10.5 machine that will also transfer sound to the client.

At a minimum, the software must support a tunnelable connection.

If there is a vetted iPad app out there that will do it, that would work, too!

Any suggestions? I found this http://en.wikipedia.org/wiki/Comparison_of_remote_desktop_software but it's a little heavy and doesn't readily indicate community acceptance/worthiness.
RogueAmoeba's AirFoil product may be helpful -- it allows you to send sound from any Mac or Windows machine (or any specific application on that machine) to one or more other Apple devices or Windows PCs on the same LAN.

The product has many features, e.g. a custom video player that ensures the sound your receive locally is in sync with any video you are viewing remotely.

Because AirFoil only streams audio, you can use it in conjunction with whatever remote desktop viewing solution works best for you.