Microsoft has a PlaysForSure website that allows you to search for subscription compatible players. The PlaysForSure logo can be very confusing since many PlaysForSure devices don't play subscription tracks like those offered by Yahoo, Napster, and Rhapsody.You can select the Audio Subscription option as well as the 20GB+ option to get a list of players:http://www.playsforsure.com/AdvancedSearch.aspxOnce you've identified some players of interest I would check out:http://dontbuyjunk.com/searchpage.php/category=1,http://reviews.cnet.com/4566-6490_7-0.html?tag=ont.hdmp3&filter=500891_5052322_They should help you find the player that's right for you.I've used the Creative Zen Micro with YME and it has worked pretty well. Its definitely not as good as the iPod line, but the fact that it supports subscription music makes it much more valuable to me.
www.playsforsure.com