As Vax said, the PLS isn't necessary - just the URL listed in the .pls file.
In what ever music player you use, (and there are many phone apps that offer music streaming on both winphone, droid and iphone), you need to have a feature that lets you directly load a url to stream from.
Enter our url listed and viola, you're up and streaming. be sure to bookmark it in your app.
If you are a patron, you should have received a special url for higher quality streaming (which I HIGHLY recommend