I just soldered up a mini-cable for my T-50RP's I shaved an ~80 degree L plug down to fit in the recessed jack (really nicely, I may add) and liberated a cable from some sansa earbuds. The cable is definitely lower quality than the stock one (I wrapped pieces of plastic over the solder joints, then put a piece of heatshrink over it one both the connections, so I wouldn't short the channels to each other or ground) but they sound close enough the same that I won't worry about it. I had to shrink the heatshrink with my soldering iron, slowly and carefully waving it under the cable. I'll hit it with a blowdryer once I can convince a girl to let me borrow one.
I still haven't taken mine apart, but they are quite robust to be shoved in my backpack thrice daily.
Excellent headphone for portable use. I'll have to do some A/B with my SR-225i to see which I prefer, but thus far I'm really happy with these.
Good luck with your dampings, everyone!