Unfortunately, you do need the Zune software to download and listen to music on the PC. I'd recommend you speak to your IT administrator at work and see if you can get permission to download the software to your work computer. If you cannot get permission, then I cannot think of another solution. Of course, you'd always be able to access your music while away if you had previously sync'd your music from your PC to your device.
Megan
Zune Services Program Manager
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