quartz: Obtain the duration using the index in avisplitter.
[wine] / dlls / wineesd.drv /
drwxr-xr-x   ..
-rw-r--r-- 330 Makefile.in
-rw-r--r-- 68206 audio.c
-rw-r--r-- 2567 esound.c
-rw-r--r-- 1144 esound.h
-rw-r--r-- 213 wineesd.drv.spec