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I just subscribed, downloaded the plugin, enterd my username and password, but no music shows up, even under recent plays. whats up?

appear to be a bit out of sync at the moment, so there's every chance they'll show up shortly. I've been using windows media player and now the player, and it seems to be taking some time for submissions to appear. So it's worth checking the log, and if the tracks are listed there but aren't on your profile yet, they probably will be soon :)

what player are you using

in iTunes, click on visualizer, turn visualizer on, and it should say there whether or not it has tracks queued for submission. If it does, they'll submit eventually. It'll also tell you if there is a problem with your settings.