Web application that runs JAR - which technology to use?

I have Java (.JAR) file that needs to be implemented as web application. In a nutshell it takes 2 files from the directory (audio .wav and .seg file) and separates audio file based on segmentation file. So as output it has number of audio files that are actually segments of original file.

I want to create web app where user can upload those 2 files and app gives back zip with files generated by jar. What would be easiest way to achieve this? Which web technology to use?