Audio uploader w/ cutter

I need a very basic uploader with an audio slider and cutter set 20 seconds apart. basically when a user uploads an .mp3 or similar audio file, they must then drag the 20 second slider across the slider to decide which 20 seconds of the song they want to use as their sample. this uploader must have a play button to sample the 20 seconds they have chosen. it must also include a save button that will then save both the full audio file and the 20 second sample seperately. Here is a basic image of what it should look like: [login to view URL] it needs to be open source and i need to be able to plug it into my own websites database.