People have already gone WAY past this. Some of those "morse code" sounds are in fact slow scan television sound clips, which can be turned into images. This yielded a whole bunch of creepy images. They then used these images to find a BBS modem. They translated the morse code into an username and a password for the BBS modem. Then they got a bunch of ASCII art with screenshots of what seems to be a new game.
Long story. Steam forums have got it all.