OP,
Chromebook is built off of Linux. You won't be able to run anything Micro$oft-based.
Unlike a true Linux-based OS, Chromebook OS is very limited in what it is capable of doing compared to a PC running either Windoesn't or a true Linux system.
R8Brain free version (stand-alone) works well in Wine (a Windows emulator) under Linux, albeit really slow, as it does in Windows OS.
SoX does an equally good job at resampling and dithering, IME and is much, much faster. Only draw-back is you have to learn the command-line-interface, which involves a lot of typing compared to a GUI...