Guys, I just got an oplay mini today. I tried playing a ripped bluray with AAC 6 channels using optical cable to my Yamaha reciever which doesn't have a HDMI input. With this config, it would never play 5.1? Or just the file doesn't have dts soundtrack for the avr?
The player plays 5.1 channel over optical but not sure whether it supports the AAC format. Just check the manual if it supports it over optical. I think if you have the HDMI then you can use the bitstream option and the AVR will decode it but unfortunately there are no AVR's which can decode the AAC formats (as far as I know). But in my HTPC the MPC-HC software player converts the AAC format to DD5.1 and my AVR recognises it as I use it over HDMI. Try to convert the AAC to something like DD5.1 and use it over optical and your Yamaha should recognize it without any issues.