(SVCD Multiple Audio Streams with WMP)
I solved this problem by installing Morgan Stream Swicher MSS(get all software you need from here:
http://www.doom9.org/index.html?/software.htm). What it does is it switches between multiple audio streams. It works in WMP 6.4 but not in BSPlayer, which either bypasses it or just doesn't give you access to the MSS's properties. So, to watch SVCD with multiple audio streams, do the following:
1. Get Windows Media Player v6.444
2. Install ELECARD MPEG 2 Video Decoder
3. Install Morgan Stream Switcher
4. Start .mpg file from the SVCD.
5. Right-click on Movie Window->Properties->Morgan Stream Switcher
6. Switch audio streams! Voila! :)
I will post a feature request about rendering MMS properties visible in BSPlayer