It just works.
It's found my media, and kept an eye on it even when I had iTunes reorganise it.
Performance is fine - iTunes gave me the shits minutes ago by refusing to play my music well.
Winamp had the right idea: play the damned music even if it means you have to take the highest thread priority you can. Why can't iTunes do this?
Complaints so far for songbird:
I can see that firefox's rendering engine, gecko, is embedded right into this application. Where's my damned address bar, in that case? (Oh: I didn't realise it was an address bar! But ctrl+l to focus it, ala firefox, is sorely missed).
Also: the icons for shuffling, etc, aren't very meaningful.
It doesn't grok video files and just spits them out as audio.
I can't open things in tabs - ctrl + click is disabled, and I miss it. Tabs make firefox wonderful.
How do I customise the bookmarks sidebar content?
Have you tried it yet? What gets you?