I have been using Audible since I got my Palm in Oct 2003. I've been subscribing to the daily edition of Wall Street Journal and New York Times. It's quite nice to be able to keep up to the current news while I'm doing stuff, taking full advantage of my time.
There's recently been Audible's own "This is Audible", a ni-weekly (Tues & Fri) hour audiocast available in 1 month and 12 month subscription. Because it's really Audible's way of selling their ebooks, these subscriptions are free. Do a search and get your subscription. It's actually not bad. It gives a good feel or snippet of fiction and non-fiction titles as well as interviews of authors from a variety of genres, especially some taken from XM Satellite radio. I find it's quite informative and entertaining and for free, I can't complain. Previous guest interviews include Wynona Judd, Sydney Pollack.
From time to time, I may get into some problems with Audible. Most times I close the Audible manager and re-open it and it will be fine. Recently, I've been having problems with Audible manager and then upgraded it to the new version and now, it seems with the new way of downloading, things are better. Rather than relying on the Audible manager to detect new subscriptions and request a download, I simply click on the daily email reminder link to my subscriptions and download it directly to the folder. Much less problems nowadays.
Audible files are in .aa format, which only plays on the Audible player.
Audible has their own version of DRM or encryption which only allows you to listen to it. Sending the file over to a friend, even if they have an Audible account won't work and they can't listen to it. The only workaround is to burn it to a CD and rip it.
There are tons of places where there are links to promotional Audible subscriptions offering half priced 1 month subscription, or a free Audible monthly subscription, or getting their free mp3 player with a 12 month subscription, etc. Just do a search and you should find lots of links.
Or go through the (
www.audible.com/palm ) promotion, which is for new Palm owners (I believe it's still valid). I think they give you a free month's subscription. You have to give them your credit card though and before the end of the month, you'll need to call them to cancel or they will charge you for next month's subscription.
I personally, prefer audio books over digital ebooks.