Arkos Tracker is a music and sound effect composing tool that runs on a PC or Mac (i.e. it is not a CPC tool), but which can be used to create tunes for Amstrad, MSX and Spectrum computers.
Arkos Tracker and it's tools are built using the .NET framework.
To run the tools under Linux, you need to install mono then you can run them with "mono <filename>" e.g. "mono AKSToBin.exe Songs/Demo.aks".
For the tracker itself, it is more involved. You need to install wine, and then install "Mono For Windows". Then run with "wine ArkosTracker.exe".