Confirm you have internet access. The easiest way would be to open up your web browser and go to a page with fresh content such as the BBC news site. This will show that your browser is actually online and not displaying the page from its cache.
Check our server is online and that you can resolve its Domain name. Go to a command line, in Windows this can be done as follows:
Click Start > Run
To test the Icecast Server (MP3 streaming) type: ping icecast.commedia.org.uk
To test the Real2 Server (Real Media streaming) type: ping real2.commedia.org.uk
In either of the above examples (MP3 or Real server testing) you are looking for 4 replies (as illustrated), if there are none (or less than 4) you probably have a problem with the network between your computer and our server or our server may be temporarily offline (although this is by far the least likely scenario). You could test further by checking other sites are reachable such as ping google.com or ping bbc.co.uk
If you can not connect to the Icecast (MP3) server then check and re-check your settings. This is by far the most common reason for connection errors. The entries should match the example above, EXCEPT password and mountpoint which should match those which were emailed to you on having your account setup. These are case sensitive, so "HELLO", "Hello" and "hello" are all different.
If you can connect to the icecast server but are not getting any audio through it may be that the peak meter is switched off or that there is a problem with the sound card setup. If the Oddcast peak meter looks like this:
Then click on the black bar to turn it back on. When audio is passing through the peak meter should rise and fall, looking like: