Max file size is 10mb so that sucks. Says it supports all file types but that pretty much excludes flac/wav.
I find a lot of stuff to be nearly unusable when coming from mp3s after running them through services like this, so I'll probably wait and see if they release the code for it.
It's not perfect, but you might have luck using Spleeter. It isolates vocals (and other tracks) from audio files using machine learning and can work pretty well in my experience. To give you an idea, here's an example from his 2020 album that I'm pretty sure someone created using Spleeter or something very similar.
If you're not comfortable with its install process, you can search "spleeter online" to find sites that will let you upload an audio file and get the output.
I ran it through XTRAX STEMS and it missed a few words it seems. I doubt these would be of any use to you, but here's a zip file containing the estimated drums / music / vocals. Maybe it'll come to use in at least some way.
https://www.amazon.com/clouddrive/share/BlrYgTGBdqq4syCbKzEq97tuUjMKi6GvSpMPnw13r62
adding it here for anyone who needs it. theres an app called spleeter that lets you isolate vocals with a single click
spleeter GUI & spleeter cmd line
results can be great or terrible depending on the song and stuff, but worth having and playing around with. i used to use the cmd line one for a long time but the GUI is just so simple and quick.
Nah just a dude making easy bucks using this free method: https://github.com/deezer/spleeter
You can also use https://melody.ml
Just open a private browsing tab and type in a random email adress when you run out of credit.
Not exactly what you're looking for, but there have been a few posts recently about spleeter. https://github.com/deezer/spleeter
It generates acapellas from almost any source. Only downside is it doesn't do high frequencies well. Default cut is 11k.
OP says they use izotope's rx7 but if OP didn't create the one above, it might be Deezer's free 'spleeter' program. The youtube account was created in late october, shortly after Deezer published their code online.
I didnt say someone is obliged or they have to it just would be nice. Like I said, you drop it in this and it takes about 3 seconds. http://www.ibrahimshaath.co.uk/keyfinder/
I didnt demand it I just said why isn't ? 20 secs for them since they already downloaded the fullsong or have the acapella could save me hours.
Just a thought I dont need etiquette user police thanks though