Audio File Editing, ready for phone music

Hey Everybody, we recorded already 5 speech files. Its for a phone service line. We are a fashion company, selling over eBay. If customer call us, they always have the same questions so we decided to make a hotline, where your questions getting answered. You call and our recording welcomes you and tell you some topics... with number 1-4 you can decide, to which topic you are calling. then the voice is telling you some basic information and, if needed, arrange a call with us. we already recorded everything, now we need somebody, who "modify" our recordings, make them proper and put some music in it. im sure, you guys know what im talking about. Its a very urgent project for us so i want to complete it asap. we are talking about 5 wav files each 10-20 seconds long. we didnt choosed any music, we want to choose something with you (some cool house beats or whatever) and putting it in the background. Happy to see your bids Ari