extern void emit_sound_np(int soundid, float vol = 256.f);
extern void emit_stream_at(int soundid, const XYZ &pos = XYZ(), float vol = 256.f);
extern void emit_stream_np(int soundid, float vol = 256.f);
extern void emit_sound_np(int soundid, float vol = 256.f);
extern void emit_stream_at(int soundid, const XYZ &pos = XYZ(), float vol = 256.f);
extern void emit_stream_np(int soundid, float vol = 256.f);