I like the idea and it looks really clean and professional. But if your purpose is to allow people to simply listen to things that are otherwise uploaded to You

I like the idea and it looks really clean and professional. But if your purpose is to allow people to simply listen to things that are otherwise uploaded to YouTube, why not just create an application where you can type in the URL/GUID of a YouTube video (except on your site) and it plays back the audio from that YouTube video, rather than making people upload things to both YouTube and your site. (Keep in mind I'm not familiar at all with YouTube's API, so I'm not sure if this is either possible or in compliance with their TOS, so if it's not possible, then I say great job, looks good!)