Need help testing some audio cables

I am in search of someone who has a sound system who can test my cables from my ipod. When we sang at Sharpsburg Fall Festival, a number of accompaniments sounded garbled (like someone was loading the dishwasher or running the garbage disposal) They said it was my files, but I had used them the week before with no problem. I think it was their sound system, but I wanted to make sure it was not my wires. Attached is a sound clip of what happened. This is supposed to be the harpsichord beginning to California Dreaming. I need to know well before December 9 when we are scheduled to sing at Monroeville Mall. If my wires are bad, I need to get new ones. I'd appreciate any help you can offer. 412-215-9631