Wow, that's a lot of applications that were updated this week. The latest one: TagPlayer.
TagPlayer is a very simple music player that plays your local music by using its Last.fm tags. The most important new feature in the latest version (0.2.06) is Ubuntu Sound Menu support. This means the AppIndicator is no longer available but if you want it back, submit a bug and Filipe, the TagPlayer developer might add it back (as an optional feature).
Other features in the latest TagPlayer 0.2.06 are: multimedia keys support and a search box. Further more, TagPlayer is now faster and more stable.
The next release will probably bring multiple library locations but possibly other features too - if you want a feature in TagPlayer, submit a bug @ Launchpad and I'm sure Felipe will consider it and try to implement it (I've suggested 2 features and both were implemented). The same goes for any bugs you may find.
Install TagPlayer in Ubuntu
TagPlayer is available for Ubuntu 10.04, 10.10 and 11.04. Add the PPA and install TagPlayer using the following commands:
sudo add-apt-repository ppa:hikibi/tagplayer
sudo apt-get update sudo apt-get install tagplayer
You can also download a TagPlayer .deb and manually install it - see the TagPlayer download page.