Create your own Internet Radio Streams
Meemix reminds me a lot of Pandora. It's a music recommendation service that finds related artists and tracks from information that you enter. Once the first artist was found that you have entered additional artists and tracks are played once the song finishes or you click the next track button.
User can rate songs from -6 (not) to +6 (hot) and change their mood using the mood control. You can select if you want to hear relaxing (1) to party (6) tunes on another slider and if you want to be surprised or not. Files can be downloaded using Orbit Downloader and Grab++. They are in mpx format which XMPlay can play without difficulties.
Meemix does have other features like a friends list, ways to find and listen to stations from other members of the website. It is also possible to block songs, buy songs and add other songs from the album to your favorites. Best of all, Meemix is available to everyone and not only US listeners.
Browsing other Radio stations is kinda cool. You can listen to the most popular stations, browse genres, stations with highest fan growth and newest stations. Great service that looks really promising.
Update: MeeMix is still available on the Internet as a service, and it does not seem to have changed a lot from the looks of it. It seems though as if you need to register to the service to use all of the functionality that it provides. While you can still play custom radio stations created by other users of the service, some features at least are limited to users with accounts.
The most important aspect though is that you can still create your own custom Internet radio stations and listen to other stations without the need to register an account to do so.