Thomas

In v4 - you don't get video on the smaller 'output1 & poutput2' windows like you used t in v3. You have to go in to full screen mode (press A or D) to see video: either via a mix window - or 'mix all layer with fx' for full screen.

For audio - ensure that the sound options are correct for your situation in system preferences. ie output = line out (for example)
For catalyst to play sound, you must use playmode 70 or 71: playaudio once, or playaudio loop, rather than the other playmodes for video only.

Neither of these functions should be affected by not having a dongle.

Simon