You need the UX1 connected to authorize your POD Farm plug-in since your POD Farm this is a factory add-on.

If you were to purchase a POD Farm 2.5 license, you would then be able to authorize your compter and run the plug-in with out the UX plugged in.

From this doc:

http://line6.com/support/docs/DOC-2277

Can I remove licenses from my Line 6 device or transfer them to a different Line 6 device?
Since your purchased licenses are attached to your account, and not your devices, using licenses on different Line 6 devices is only a matter of authorizing the devices.

NOTE: One exception is “Factory Add-Ons”. These are features that can only be used with the device it came with and cannot be removed from that device to be “shared” with your other Line 6 devices. For example, POD XT Live comes with an FX Junkie Add-On. After authorization, License Manager does not make that unit’s FX Junkie available to your other authorized devices. In License Manager, Factory Add-Ons are displayed in italics once you've selected a device and goes on to say "these Add-Ons can only be authorized on this device".

+1 to Triryche.

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