I developed a BSI-Ini maker for BSPlayer. It supports multiple cds, chapters, cbf file, subtitles (for bsplayer and for vobsub), extra audios and almost all of available options of bsplayer RC1.
It automatically recognize the length of the avi files and set the start time for subtitles and chapters. You have the option to split the subtitle files and correct the synchronization with the movie, so that they could be displayed by Vobsub.
You can download it from
http://members.lycos.co.uk/ajimp or
http://praktoreio2002.billy.gr/bsinimaker.zip
I hope you find it userful