Browser-specific Embedded Audio Sample…?

Hi. I’m new to both WordPress and PHP, so forgive me if this is a stupid question.

I just converted one of my blogs to WordPress, and this particular blog’s central feature is its audio samples. I have a Flash button that loads and plays each sample using one flashvar to complete the file path, and I’ve done something similar with a Quicktime embed for iPhone/iPod Touch compatibility. (I use these techniques to put audio samples on the page rather than using direct links because I don’t want people to download these samples. That comes later.) The trouble is, I don’t have these two techniques consolidated into one solution that will load the appropriate code for the appropriate browser, so I’m maintaining a separate iPhone version of the blog which is entirely hard coded and not interactive in any way.

What I’d like to have is an extra button in the New Post page interface that asks me to type in the file path and then pastes in some kind of custom tag that WordPress can convert to either the Flash button or the Quicktime embed based on a browser sniffer.

So my question is twofold: 1) Is this possible? 2) Who can I talk to to help me in developing this functionality?