RetroArch Genesis doesn't detect additional ISO

When loading the Genesis game (a .bin file) with Genesis Plus GX it loads the game correctly, but the audio that comes on a seperate cd (provided as an .iso file) isn’t recognized. Only the audio from the cartridge itself is available. The game doesn’t seem to work at all with the Picodrive core.

Is there any way to fix this?

I’m not 100% on it, but I think you need to load a cue file to get CD audio.

So how would i go about doing that? I know that i can convert an .iso to both a .bin and a .cue file. But if i did that this would cause problems considering the rom-image itself is named .bin.

But i am propably being foolish and there is a much better way that i simply don’t know of.