Spotify Coming to Windows Mobile
"Looks like some major software development for Windows phone is still going on, as those Swedish developers of 'Spotify' plan to have a full fledged Windows Mobile by next month."
Haven't heard of Spotify? If you're outside Europe, you might not have: this is a service similar to Pandora where you can get unlimited music streaming of a huge online catalogue. They haven't rolled out in North America yet, though a friend of mine hooked me up with an invite and I've been using it for a few months. All in all, it's a pretty slick service - though if you're in the USA, a Zune Pass would probably give you better value.
The one kicker with streaming music services on a mobile device is battery life - as in, after an hour of streaming, your battery might be flat-lined. Something to be aware of!