"First, the licence. Songbird has been released under the GPL and with a EULA. Are they mad? No! Songbird had to incorporate it because it includes the Mozilla browser; this is also why, incidentally, you will have to accept the EULA before you can actually install it. however, you won’t regret it. Not for nothing has Songbird been described as the Firefox of media players. Songbird is a media player and an integrated browser.
"Songbird runs on Mozilla’s XULRunner and is cross platform for Windows, GNU/Linux, Solaris and Macs. XULRunner is a small runtime environment which allows you to run Songbird even if you do not have Firefox installed, which might be a boon if you are running a minimal GNU/Linux distro where space and memory are critical considerations (as Songbird is not exactly abstemious when it comes to memory and processor hogging). More importantly, Songbird can work with most online music services and is not restricted like iTunes to one format or music source. Songbird will manage MP3, Ogg and Flac on a GNU/Linux platform and play nicely with eMusic, Connect, lastfm and Amazon. This is hardly surprising: being free software, Songbird is no friend of RIAA content or Apple-style DRM music either."
