I have the same problem (or almost). When using the following INI file:

[Main]
Version=1.00
NumberCDs=1
CD=1

[Movie]
Title=My movie name
Directory=..\Movie
FName=Movie.avi
AudioName1=Espa??ol

[Options]
PanScan=0
FullScreen=1
ExitAtEnd=1
Audio=1
Lang=Spanish
RunHD=0

The player is at "BSPlayer" directory, and the movie at "Movie" directory (both directories at root of CD). When I try it from HD, works OK, but when I burn it in CD, and plays using autorun.inf, BSPlayer opens and stop. If I try to load manualy INI file it says "Can't find bsrend.dll". ???

My autorun.inf is:

Open=BSPlayer\bsplay.exe "myinifile.ini"