It might be able to -- I hacked that in there a while ago. It's probably not been tested recently, so it's likely to have been broken (and didn't work all that well in the first place).

First thing: you need to ensure that your Central has good connectivity to the outside world. To be specific, you should be able to ping the shoutcast host successfully.

After that, try pointing the play program at a .pls file via http (which is basically how Shoutcast works). It ought to grab the .pls file and then start streaming MP3 data from the first URL listed therein.

Alternatively, try pointing it directly at an MP3 stream.

It's not a supported program, so don't expect any other support.