AL_API signed char OPENAL_3D_SetAttributes(int channel, const float *pos, const float *vel);
AL_API signed char OPENAL_Init(int mixrate, int maxsoftwarechannels, unsigned int flags);
AL_API void OPENAL_Close();
-AL_API signed char OPENAL_IsPlaying(int channel);
AL_API OPENAL_SAMPLE *OPENAL_Sample_Load(int index, const char *name_or_data, unsigned int mode, int offset, int length);
AL_API void OPENAL_Sample_Free(OPENAL_SAMPLE *sptr);
AL_API signed char OPENAL_SetFrequency(int channel, int freq);