Though there can be many computer-related reasons for not hearing any audio playback from the RPC-1 audio card, it is possible that the R-BUS channels on the VM-3100PRO are simply turned down or muted. Use the following procedure to turn up the R-BUS channels and clear all MUTE and SOLO settings on the VM-3100PRO:
1. Press AUDIO CH so that it is lit green. This changes the fader control target to the R-BUS input channels (13-20).
2. Turn faders 1-8 all the way down, then back up to the "0" mark (note that you are now actually controlling channels 13-20 with these faders).
3. Hold SHIFT and press MUTE. This clears all channel mutes.
4. Hold SHIFT and press SOLO. This clears all channel solos.
1. Press AUDIO CH so that it is lit green. This changes the fader control target to the R-BUS input channels (13-20).
2. Turn faders 1-8 all the way down, then back up to the "0" mark (note that you are now actually controlling channels 13-20 with these faders).
3. Hold SHIFT and press MUTE. This clears all channel mutes.
4. Hold SHIFT and press SOLO. This clears all channel solos.