No help with the mini or memory player.
However I do use JRiver and all my ripped cds to either USB thumb drive or PC own internal hard drive are always in track order.
Not sure if I got lucky with settings or what.
I did have a similar problem with mconnect software on my phone and once I dug into the settings I did find an option for title or track number which fixed the issue.
Might be worth poking around the JRiver settings?
However I do use JRiver and all my ripped cds to either USB thumb drive or PC own internal hard drive are always in track order.
Not sure if I got lucky with settings or what.
I did have a similar problem with mconnect software on my phone and once I dug into the settings I did find an option for title or track number which fixed the issue.
Might be worth poking around the JRiver settings?