1, httpapi.asp?command=setPlayerCmd:m3u:play:URL
To send a M3U link, and it will be then parsed and create a playlist for playback. supported M3U tags:
#EXTM3U m3u header, must be in the first line
#EXTURL:URL URL for coverart, placed before the music link
#EXTINF:N,ARTIST - TITLE Meta info, placed before the music link
URL music link, relative to m3u or absolute,
example:
#EXTM3U
#EXTURL:http://192.168.0.2/test/cover.jpg
#EXTINF:1,P!nk - Just give me a reason
Just Give Me A Reason.mp3

2, httpapi.asp?command=GetTrackNumber
To query track number of current playing playlist, will return a number.

3, httpapi.asp?command=setPlayerCmd:playindex:N
To play the selected track in current playlist, N is start from 1, and if N exceed the number of tracks, it will play the last track.