While developing ASID support for TherapSID I was a bit annoyed that there was no available player for recent macOS. So I recently implemented it into the online DeepSID, which contains a huge database of C64 SID files (HVSC and more). So nothing needs to be installed. Today it got into the main release and is available for everybody. Would be interesting to see if it works fine for Sidstation owners!
You will need a browser that supports Web MIDI, such as Chrome.
Here it is: DeepSID
I also made a short demo of it with the TherapSID and the remix capabilities, here: