Format My Recorded Videos I created in Camtasia

I am new to camtasia which I have recently downloaded. I have created around 30 recorded videos (30 seconds to 1 minute long) explaining a power point presentation of 30 slides. I wanted someone to just merge these videos so it seems I have recorded the video in one go. The final video will be in MP4 HD qulaity Also if there any suggestions to improve the video such as adding background music or anything then I am happy to consider it. I think you will need camtasia software as the videos are saved in trec. This is the raw video camtasia saves it and this is the format I will send to you. I have attached the powerpoint presentation and all the videos that need to merge together to make it as one. Please view the project before you start bidding. Please send your proposal.