What that means is that they promise they won't automatically bill you again. During that six or
twelve months you can upgrade as often as you want. Best of all is your Pro will not expire or
stop working, so you can keep it forever even if you only paid once.

I purchased my Limewire Pro Sept.2/06...so how do I upgrade to version 4.14 without paying again?

I don't think the one year option was available then, so your free upgrades has expired and you'll have to purchase it again if you want the latest version of Pro.

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