MP3's not playing on Roon

[agent_kith]

ok first command did not help unfortunately

so

/opt/RoonServer/RoonMono/bin$ ldd RoonServer
        linux-vdso.so.1 (0x00007ffd6ffe8000)
        libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f2752650000)
        libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f27522b2000)
        librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f27520aa000)
        libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f2751ea6000)
        libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f2751c87000)
        libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f2751a6f000)
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f275167e000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f275286d000)

Well, good news is RoonServer doesn't appear to be using ffmpeg.. But then again Roon is C# (Mono) it may be using another means to load the libaries (each .so file you see above is something called a library, in Windows this is commonly called a DLL).

Do you know if RoonServer have any diagnostic logs? If so, can you post the log info here for me to have a look?