I'm wondering if there is any way to upload a file from the computer as the Personal Greeting that happens when you miss a call. The scratchy mic that the phone has just can't do any good greetings justice and I would really enjoy being able to upload my greeting from my computer itself without holding my phone up to the speakers. I've searched everywhere and it all tells me that that is the closest thing that I can get but I decided to come here and make sure.

Is the personal greeting file held on my phone so I could replace it? Could I contact somebody with access to the server that holds my personal greeting?

I use a Samsung Impression.