Citace Původně odeslal http://en.wikipedia.org/wiki/Dvi
In Radeon HD, audio signals are carried through DVI when the video card detects a connected HDMI display, which is connected via the HDMI adapter which is optionally supplied by the manufacturer.
...jinak řečeno, mělo by to jít i bez tahání audia bokem.

EDIT: koukám pozdě