Here is a sermon from Dr. Norman Geisler (author of the book Chosen but Free) where he explains why his is not a Calvinist. Geisler is enjoyable to listen to, and he explains the problems with Calvinism in terms that are easily understood by the layman. He gives a number of good analogies.
Geisler take a “moderate” position, so he would likely not describe himself as either a Calvinist or an Arminian. However, he is sympathetic with Arminians on all points except Perseverance of the Saints.
Here is the link: Why I Am Not A 5 Point Calvanist.
Unfortunately the link is in Real Player format, so you can’t download it to a portable player.
(Update: Here is an mp3 link on the firefighters.org site.)