multichannel audio interface for laptop DJ??

so the edirol ua-25 definitely has a 2nd audio output for monitoring through an application (like traktor)? b/c I'm not seeing this in the pics...

Also, when playing *any* audio, even through a program like winamp, there are clicks & pops, and I went through the entire troubleshooting section without anything making a difference. Latency adjustments don't change the clicks or pops either. Again, this is happening even when playing 1 track in winamp with no other programs running, and my laptop has 1GB of RAM...

Any ideas???

http://www.zzounds.com/item--EMU1616

no clicks or pops, and it's got 3 separate outputs..

So I have some shifts playing records at a local bar now, and though I usually play records, I want to start using digital music, just so I have a bigger library of music to pull from, but I don't know where to begin.

Is there a very simple program that will let me fade between different songs on my laptop? I'm looking for something basic; I'm not really mixing or anything, I just need a way to seamlessly transition between songs, maybe queue up songs, that sort of thing. Any advice on where to begin?