As a workaround to not being able to connect to the store from work, I used the "Download album" feature of the store on my home computer. Then when I connected to my home library through Library server at work, I tried to play one of those songs. But it looks like the DRM prevents playback. It would be nice if the MC server negotiated the DRM and streamed DRM free files to up to 5 clients.
Is this likely to ever happen?
I actually do most of my music listening at work or on my iphone now, so without access to the performer store on either, the monthly streaming option starts to feel quite expensive.