I recently installed Reaper and have bought an Roland Um-One Midi cable to connect my Nord to the program.

I've installed the drivers, and now upon entering Reaper I've found that my midi keyboard is being recognised (when I hit notes, sound bars are moving) but I'm getting no sound.

I've selected a VST, have record monitoring on and selected the Um-One under all the midi settings- but alas, still no sound.

I'm using a Mac, does this have something to do with my sound card? I see a lot of other tutorials talking about using an ASIO driver, but I can't select anything like that.

I feel like I've tried everything! My computer is obviously reading the midi, but not giving me a sound.

Any help would be muchly appreciated!!


  • It's not clear yet if Reaper is not sending sound out to your hardware, or it's just not routing the audio from your VST correctly. What happens if you load a plain-vanilla audio recording into a Reaper track and hit play? Does it produce any sound then?
    – Warrior Bob
    Commented Jul 24, 2012 at 17:09
  • Possible duplicate of avp.stackexchange.com/questions/1109/… Commented Jul 24, 2012 at 18:44
  • As stated in the answer of that question: For an excellent guide on getting started with Reaper and MIDI look here (PDF). Commented Jul 24, 2012 at 18:48
  • Does your computer can play Midi without keyboard? (If you use normal windows player)
    – Boris Ivanov
    Commented Jul 25, 2012 at 9:55
  • Do you have audio connected from your sound card to your speakers? Sorry if that seems elementary...you don't really describe your rig.
    – Zeronyne
    Commented Jul 30, 2012 at 20:44

1 Answer 1


In the audio preferences of Reaper check if you have the right sound card and output channels selected. If your midi keyboard is working correctly you should be able to have sound when using a standalone VSTi.

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