I’ve done a fresh install of Wavelab 12 Pro on my macos 15.5
I started Wavelab and selected my Focusrite Scarlet 18/20 USB (3rd gen) as audio device.
I created an audio montage and added 6 WAV files 48k, 24bit. Then I selected said “change the Audio Montage to WAVs settings”.
When I now press play, no sound gets played!
At the bottom right corner (left of the rendering button) a blue box shows up and fades into “48.ooo KHz” and then the number fades too …
But still no sound !
Any idea ?
(Yes interface is on - macos is playing sounds 
Thanks
Tom
Did you give permission for WaveLab to use the “Microphone” the first time you opened it and tried playing audio? It’s important to say yes, even if you just plan to play audio and never record it.
Yes, I did !
What I noticed now is that some time after I have tried to play something and leave Wavelab alone doing nothing, the KHz shown in the right bottom switch to 96.000 KHz stating my Interface is running at 96.000 KHz … I checked the project info and it says correctly 48KHz…
But even an Interface running at 96KHz should be able to play files in 48KHz…
After spotting it I tested Reaper and VLC … all were playing fine those files with the same interface settings …
It’s hard to fully understand what you have going on but..
WaveLab should be able to change the sample rate of your audio device if needed, as long as there isn’t a hardware knob or other piece of software holding it at the incorrect sample rate.
Close any other audio apps that might be holding the sample rate to something other than the one you are trying to play in WaveLab.
In addition, while it’s not a direct solution (in my opinion), you can use the Resampler in the Master Section to set the output sample rate of WaveLab to match your audio device. In other words, you can play a 96k file in WaveLab with the Resampler set to 48k if your hardware interface for some reason is stuck at 48k.
It’s hard to say more about what you have going on without any visuals.
You don’t hear any sound, but is the playback cursor moving from left to right in the WaveLab window?
Is your audio device linked to a word clock? (hence, without the possibility for WaveLab to change the sample rate)
Try this option off, If this is not already the case.
Cursor is not moving !
Pls see the driver settings on the screenshot …
No change with option off …
Enabling the Resampler on 96Khz starts the playback - but with no Cursor in the montage window!?
WE ARE GETTING CLOSE 
Now I have playback and a cursor …
But is this the way Wavelab should be used - having the resampler always activated at 96k because the interface is running at 96k ???
Why is your audio device locked at 96K? You should allow your audio device to adapt to what the software wants. Having your audio device locked at 96K only makes sense if you only use 96k audio files.
As there is no way to “lock or unlock” the sample rate manually (you just select any), I guess this means the clock is locked now… I just selected 96KHz on day one and never had any problem so far … Any systems app is running fine and also any DAW like Cubase, Logic, Reaper … Also players like VLC never had any problem with the interface … I even run MS Teams on it
Just today with Wavelab the first problems came up after a few years !
Did you try to reboot your computer?
Here we go with bastard operator from hell 
If nothing helps - restart first !
But yes, I did … 
Like said PG1 - basically it’s working now wth the resampler workaround …
I just want to know if this is a wanted scenario and whether there are any disadvantages !?
I took an old Focusrite Scarlett 8i6 out of storage and connected it to my Mac (latest macOS). I downloaded the latest driver and launched WaveLab 12.0.51. I can play both 44kHz and 96kHz files without any issues, and without using a resampler. The settings on my Focusrite are identical to the ones shown in your screenshots, except that I don’t have an RCA S/PDIF connection.
Using a resampler can be a valid solution for a low-end audio interface that cannot switch sample rates automatically. However, I would be surprised if that were the case with your Focusrite. Perhaps another forum member using a Focusrite can share their experience.
A resampler uses some system resources and also adds latency.
What matters most is placing it in the playback section. Otherwise, it will be used during audio rendering as well, which I assume is not what you want.
As mentioned earlier, another audio DAW/app, or physical or digital setting within the interface must be holding the interface at 96k.
In normal operation and with every interface I’ve used in my 15 years of using WaveLab, WaveLab has always been able to change the device to the correct sample rate to play back an audio file or audio montage.
Something else must be locking your interface sample rate so that WaveLab can’t do it.
Having to use the Resampler is a solution, but not the right one for every day use.
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