* Upgraded to SDL 1.2.15, SDL_mixer 1.2.12, and SDL_image 1.2.12
* Patched SDL_mixer to fix a double free that caused a crash on Debian SID AMD64
* Fixed crash on Choose Options screen if audio fails to initialize
* Added code to try to accommodate low end audio chipsets when initialization fails the first time
* Default to Windowed mode on Linux
* Add a line to the rickrocket start script that players can uncomment if switching to fullscreen fails, so you can get back into windowed mode