If you're like me, you hate how QT adds itself to your system tray every time it starts, tries to open ALL mulitmedia files (as well as some still pictuires) and hate how REAL adds itself to your startup as well, and is also a friggin MESSENGER? C'mon! I just want to play REAL files, that's all! Also REAL is trying to get Apple to get make iPod REAL compatable. Make your own friggin portable player. ANYWAYS here are some alternative programs that play these file types:
Quicktime one here:
http://www.majorgeeks.com/download4100.html
REAL alternative:
http://www.majorgeeks.com/download4094.html

Both work and come with "Media Player CLassic" which is like the old Windows 98 Media Player. I've tried the REAL one, it works fine for me.