It's very important to have installed the latest version of Flash Player. You can download it here.
You need to have the latest version of Windows Media Player installed on your computer.
Windows Media Player for Chrome Extension
If Chrome is alerting you about missing plugins you should install the WMP Chrome extension. You can download it here.
Windows Media Player for Firefox Plugin
If Firefox is alerting you about missing plugins you should install the WMP Firefox plugin. You can download it here.
Also, you might need Real Player installed for certain radio stations that only stream with Real Audio. You can download it here.
You will need to install Silverlight and Flip4Mac. Both plugins come in the same installation file which can be downloaded from here.
You can also enjoy Streema in Linux if you are using Ubuntu, to do so, follow the next steps.
First, open the Package Manager. Then, select and install the following packages: "gstreamer0.10-plugins-bad", "gstreamer0.10-plugins-ugly", "gstreamer0.10-plugins-ugly-multiverse", "mplayer" and "gecko-mediaplayer".