Man, you did a fantastic job there in generating this MP3 mod. I visited your site, it shows that you are a huge music fans. And no wonder.
I got a little suggestion for your contributed mod:
When a user writes the digg content, he is supposed to "UPLOAD" an MP3 from his machine disk. This is good for original songs but not quite legitimate for other billions of MP3s. Also, the uploaded bumping files will actually occupy the webhosting or server space as well as the bandwidth, which is against the core spirit of running a DIGG system - we are mean about costy stuffs like space and bandwidth.
So, a referral of an URL (format:
cPanelŽ.[referral_url].com/...[path].../blabla.mp3 ) may help. As long as your flash ware at the front can display mp3 from this referral URL, it would be great.
This referral URL can serve as a bonus option for a user who can either choose to upload a mp3 file with your [upload] function, or copy&paste the URL grabbed from google search or somewhere.
Finally, you have done a great thing. Thank you.