Listen to these streams in your favorite media player (the Opus stream is only known to work  in Winamp and VLC Player):

64k HE-AAC:  http://fs-east.theblast.fast-serv.com:80/blast64

56k Opus:  http://fs-east.theblast.fast-serv.com:80/blast56ogg.opus

48k HE-AAC:  http://fs-west.theblast.fast-serv.com:80/blast48

32k HE-AAC: http://fs-east.theblast.fast-serv.com:80/blast32

20k HE-AAC: http://fs-west.theblast.fast-serv.com:80/blast20