Curtis MP3,Model MPS1015 Input cable

Question

This is the cable that connects (via USB) my computer to the MP3.
I lost it when I moved from Miami to Leesburg, Fl. I can not load down music from Internet to unit. I have looked everywhere, but the connector on this unit is the smallest in the market, and not even Radio Shack has it.
Please help me out here. This is a good unit and it holds 1GB of music.