That's funny, I didn't think you needed to. Just randomly tried out a band I knew on it without logging in and it was fine. I'm assuming you've logged off and typed in the name of your site? i.e.
www.soundclick.com/(name).
Personally I prefer to use
SoundCloud when linking my songs since it has a proper embedded player (and there's no login issues).
I use SoundClick a lot now. I use SoundClick also because I can understand the SCk charts, they tell me exactly where my song is within its genre, how high (or not) it went and so forth. I can't get any sense out of the SoundCloud charts at all. The other chart I know is Reverbnation, but that's a joke because I found an artist just below the 600 mark with NO MUSIC AT ALL iow he was ahead of several thousand artists with one or more tracks uploaded! I no longer take the Reverbnation charts seriously at all - someone independent needs to scrutinise them.
Thanks