There is something wrong with the hotel stereo for the wedding. At present, the final payment of the wedding has not been paid. Can the wedding company sue me?

Yes, because the wedding company didn't breach the contract. Therefore, if a wedding is generally held in a hotel and called a wedding company, it is best to use the equipment and construction of the wedding company. If you use hotel equipment, you need to ask the hotel to arrange the person in charge. If the wedding company is allowed to manage the hotel equipment, there will be disputes if something goes wrong, just like you are now.