Here's a link to some USB foot switches that are currently on Ebay:

http://www.ebay.com/sch/i.html?_trksid=p...0&_from=R40

I have one of the triple switch version, and I use it when I play on StreetJelly. I set the juke box to stop between songs.. that gives me a chance to tune, add a capo, get a harmonica, change from an electric to an acoustic etc etc whatever.

Then when I'm ready, I step on the switch and the song starts.

I find that I only really use the START pedal, so a single would probably last longer... the triple is made from very thin and brittle plastic if you catch my drift.