THEBON  I wrote to the developers because I now have Leopard and despite knowing all the ways I can download flv files, which I do often, I prefer having the ability to have the program do it for me effortlessly. This is not as elegant a program as FLVR, but it works just as well and without all the extra files that you never wanted in the first place. And it doesn't rely on Safari. I got the replacement in under an hour. Even though I had no notes on the Beta it was easy enough to get up and running. I just tried it with a video I was viewing via Firefox and it worked just fine.

Every time I've had any interaction with the customer service department it was pleasant. They apologized for any unreachability in the past month because of personal issues which are presumably now resolved.

According to the Tastyapps website you can exchange your FLVR license for Videobox and its future 2.x updates. I wrote last last night and then again this morning and told them I was waiting to install Leopard and didn't want to do it without the upgrade to Videobox I received a reply in under an hour. Give them a chance.  
(Version 2.1b)