Some ideas
 

There are couple of things that i would like to see.

First concerning the chat feature. I often miss chats becuase im not always at the computer, so couldnt there be some sort of alarm sound then a chat arrives? also a function that tells me, that the other person is actually writing a response message on my side just like MSN Messenger has.

Some other thing i wonder about, is the annotate function, does this function really follow ID3 specification? if not how does lime motivate this offtrack tagging then? I have looked at www.id3.org for the specification and i doesnt seem to match.

Ciao!