Yes, it's related to the Subway. If I boot the Amiga and open AmigaAmp, I have no problem, no Ahi request and it opens the Mp3 I have in the internal Cd, but if I close it, put a USB I have (with a couple of Mp3) the first I have opening AmigaAmp is a message "Can't open ahi.device! Please make sure you've got at least v4 of AHI and that your AHI preferences are correct".
If I then open a project (the Mp3 cd is still inside) I get a message of "No output device available".
I very much doubt this is related to Subway in any way. Try this:
- Copy one mp3 on the USB to your local HDD
- Try to open the mp3 with AmigaAMP from your local HDD
You will get the exact same AHI requester. See, it's not related to Subway.