Dear Atom Pad User - sorry I don't know your name.
If you're using a PC - you don't say which computer you're using, PC or MAC, I MIGHT be able to help you.
I don't know what an Atom Pad is - carry on reading! - but Windows DOES have a pitfall waiting to catch people out - it's got 3 different kinds of sound output going on. MME, Windows Direct Sound and WASAPI. If the recording program and the sound output program aren't using the same one of the three, you'll be able to hear the output - but the recorder won't!
I've hit this before with things. I'm afraid I'm a NOOB with Studio One - that's why I came here, to ask a dumb question - but try and find where it says what it's using for the sound output, which one of the 3 above, and make sure everything's singing from the same hymn sheet. If that doesn't work for you, the 'out' I use is Audacity. Great piece of kit, Audacity. On the top left, there's a little arrowhead that lets you choose any of the above 3 kinds of output. If you playback your track - or an MP3 or anything that makes noise - with Audacity on record - square with red dot in centre - and you get a wave form, you've chosen the right one. So playback your track and record it using Audacity, not forgetting you can still switch between settings if the output's not working for you.
That's the Windows output. ASIO's a different kettle of fish because it's an external program and it wants the whole of Windows Audio Output to itself. When you've got ASIO going, you can't hear anything else anywhere. Not sure if Studio One's got an ASIO option but if it does have and you're using it, Audacity won't work because ASIO's the only thing controlling sound. If you're using ASIO and you can't do a direct soundfile output from Studio One, only thing I can think of is to come out of ASIO, find one of the above three settings that lets you hear the track with ASIO closed down and THEN use Audacity! You'll find you can just about master using Audacity, with all its effects. I do!
Yours respectfully - leave an answer here if you still have problems and I'll be E_mailed and get back to you -