TubeNet

One place some forum members use is acidplanet. Do a search, and you'll get a good number of threads with info.

Another, more flexible option, is to pay $5 per month for your own web site -- which is what I do.

You can always cheat a little and make a video with your audio (perhaps just a long-running still photo) and post it on YouTube for free.

http://www.mediamax.com
Best site for that EVER. I've searched around for several places, and this is the best one I've had luck with. I also host pictures and other stuff off of there, since you get 25 GB.