1. Take the supplied cable (coiled one) to Radio Shack.
2. Purchase a female to female adaptaplug cable.
3. Purchase an "M" tip for the said adaptaplug cable.
4. Have the sales clerk match the supplied cable for another "?" tip.
should get out for under 15 bucks, no hacking necessary!
oh yeah and let us know what the other "?" tip is, I need to get one too!!!
edit: the UA5's polarity is reversed (center pin negative), so you will just flip the "M" tip.
after cross referencing the included paperwork & Radio Shacks website, I have come to the conclusion that it will be the "B" tip. (but don't quote me!!!)