Go to Deja News and try a search on chanter or DegerPipes. Also post your inquiry to the newsgroup rec.musicmakers.bagpipe, as this topic has been covered there a number of times.

Another option to consider (as a learning tool) is Rob McNeil's new Bagpipe Music Writer Gold. Aside from its spiffy music notation capabilities the new version also does a great job of playback. With some tweaking (e.g., double dotting notes) you can get the phrasing darn close to the way we pipers play. The program also plays through the sound card, so you can play (your chanter) along with the "pipes" or "shuttle pipes" or "practice chanter"... depending on the desired voice and sound patch.

I make learning tapes of our band tunes in this way... great for playing along with or for listening on a Walkman for memorizing.