I just added my first Squeezebox Controller to my set-up.

Couple of things - that might be bugs.

I already have a SqueezeNetwork account - so when prompted at the Controller to join SQN I selected the option to say that I already have an account.
I was then prompted to provide my email address - which I did.
At the end I selected the ">" but there is no visual feedback that it was validated/accepted.
Pressing the back arrow simply reversed through the text.
I think that the only way that I could get out of the menu was to hit the Home button.

When I tried to connect to SQN from Controller (having enabled the Beta function to make SQC a player) I was given a PIN at SQC and told to enter it at SQN. The PIN disappeared before I memorised it ... but when I went to SQN I found that the Controller had managed to get associated with my account and there were no prompts from SQN to enter a PIN. Does this mean that this is a legacy step that is no longer required and should be removed from the set-up process to make it easier for first time users (OK - there won't be many more first time users of SQC but does same thing happen with Squeezebox Radio?).