I would like to add (for myself), or have the proper maintainer (for everyone) add the Mac OS X bindings to the new audio class "AVAudioPlayer". I've written a unit in Objective Pascal which can/will use that class to provide a very simple audio player for Lazarus projects. However, it doesn't succeed linking due apparently to the lack of AVAudioPlayer presence in the Cocoa bindings. The two other classes used by the unit, NSData and NSError, do link okay, so I'm pretty sure my structure is 'sound' if you'll excuse the pun. If I am permitted to experiment for myself with the OS X API bindings on my own machine, I'd ask for directions to locate the library or code in which the bindings are implemented. AVAudioPlayer is a direct descendant of NSObject, and is quite simple as classes go, with only a few methods and properties to register, so the process might be relatively simple, especially in context of all the other bindings in that code. Thanks for any suggestions or assistance you can offer.