@mhoye Nope. The audio tracks aren't exposed through that interface.
That interface is intended for access to the filesystem.
This makes sense for Historical Reasons, where PCs would access the filesystem data, but the audio data just got played, and the CPU wasn't involved: The drive itself is playing the audio, and it's just being routed to the speakers (through cables, not software).
To pull the audio data off a disc, you need cdparanoia or EAC or something similar