Hire an audio digital recorder for a day, a week or longer, record your own material and bring it back to me for editing and compiling. The result is your audio clip (your copyright) to place on your website, distribute by email, or do what you want with.
I use the Olympus LS-10 recorder. It's blindingly simple to use and records broadcast quality stereo audio.
The basic rental pricing is £24 per day (£34 on first day) and editing from £75 per 15 mins recorded material. See Price Guide.