Think about it - cdr trading has exploded the last half year or so. There is a whole new field of media that is easy to use and that has players all over the place. Relatively easy to produce, and can be very high quality with no sound degradation. The people who have cdr's and who can copy cd's are just as eager to get shows as the people who don't have either and must grovel. You'll notice there isn't a suggestion of rudeness or anything here.
Traders tend to be busy.
Okay, so they're not all jerks. First rule of groveling - patience. They're doing you a favor, never forget it. It's the same rules. Be patient, be nice.