You can download the code and sound examples at: http://musicforgeeksandnerds.com/resources.html

The kindle version at amazon shouldn't have DRM (I hate DRM).

Just keep in mind that some (older) kindle readers may not display some formatting properly, such as code blocks and tables (gasp!) that's why I sell a package with 3 formats. It looks good on my kindle3, but your mileage may very.

Unfortunately this is a limitation of the format (modi) and readers (it should get better with the kindle format 8).

I bought some programming books from Amazon for the kindle that I end up buying again from the publisher just to have a pdf copy and be able to read the source code better. It's still convenient to have some programming books on the kindle, though.