[AD] Destroying samples while they're playing crashes

["Trent Gamblin" <trent@xxxxxxxxxx>]

I noticed this on the iphone, not sure if it affects other platforms. I fixed it by adding
al_stop_sample calls before destroying any samples that have been played. I couldn't really find
the root of the problem though. kcm_audio is still swimming in my head, I don't fully understand
it. Just reporting here for reference (Or maybe someone can fix it...).


Trent :-)