assign audio files to mp4 files automatically

[perhapscwk]

Q1: I have a folder have song filename formate like

Video: song1.mp4
Audio left channel: song1.mp4.mv1
Audio right channelsong1.mp4.mv2

Is there any ways can allow bsplayer to preload all audio in the video so I dont need to play each video and assign both left and right audio manually?

Q2: thinking to use php to write a system to control the bsplayer(such as add song to playlist, stop and play video, switch audio channel or play next video, any hints or php is impossible?

Thanks.