Pandora has recently announced support for select Windows Mobile devices. Unfortunately, the handsets that are supported are limited to just the HTC Touch and the Motorola Q9C. Users of either of these handsets can browse over to www.pandora.com on their mobile browser to install the app.
Pandora is free to download and free to use. Personally, I would say it is the best music streaming service available. For those unfamiliar, Pandora allows you to create customized stations that are based on an artist or song of your choice. Hopefully, Pandora will continue to expand upon their supported device list. In the meantime, Windows Mobile users can now begin to listen on the go.