I have an avi file with associated .sub and .idx files containing subtitles in 4 languages. The sub/idx files were created by SubResync

My problem is that subtitles are always displayed in the first of the languages whereas I want the 4th language. The idx file has langidx: 3 which should give the 4th language.

I have tried running it in WMP 10 and VLC Media player with the same results.

How do I show the language that I want.