How can I record a track off soundcloud so I can add a track?

I've been trying to get a friend's soundcloud into Garage Band so I can add another track. http://soundcloud.com/13-black-productions/tess-barr-blues-band-little-by#play The best I've been able to figure out is go to the download page where safari presents a playback bar. Then I press the play arrow, switch back to GarageBand audio recording, hit the record button, and let the song play. But I always miss the first few seconds of the playback.

If I try to start the GarageBand Audio recording first, then switch to Safari and start the playback, I see a red bar along the top of the Safari screen that says Garage Band is recording, but then the red bar flickers. When I check my recording, I find that GarageBand has stopped recording the playback at that flicker.

Also, the best settings I could figure out for recording from Safari were to add a whole bunch of bars, more than I need, turn of the metronome and count in, so I am ignoring the GB bar structure.