Milliseconds for the fade-in effect to complete.
-1 loops will play forever. 0 plays the music zero times.
Set the position of the currently playing music. The position takes different meanings for different music sources. It only works on the music sources listed below. <b>MOD</b> The double is cast to Uint16 and used for a pattern number in the module. Passing zero is similar to rewinding the song. <b>OGG/MP3</b> Jumps to position seconds from the beginning of the song.
true on success, or false on errors
Starts this music by fading in over ms milliseconds, will stop other musics.