When I was using Napster more I would often pick the 28.8 and less connections first. Basically nobody who Napsterizes is running 14.4 or 28.8, so when then they say that it's usually a dead giveaway that they're running DSL/cable/T1/T3.
Edit
<< If you had the song on CD you wouldn't be settling for lower quality MP3 recordings, let alone wasting your time and bandwidth. >>
MP3 is the greatest thing since sliced bread. Since most of my friends listen to completely different music than I do, I use Napster to find new stuff I like. When I find it I go out and buy the CD. Then I encode the entire CD myself (usually VBR, highest settings). It's much easier taking 3 MP3 CD-Rs to work than hauling around 35 CDs. It will be nice when I get my MP3/CD portable player too, but good ones are kinda scarce around here. I already have an MP3/CD player for my stereo system. Sound quality is excellent.