Yes I have attached an Archive with all the IconsDualPNG for RNOTunes
Creating Dual-PNG Icons is super easy to do with "Icon Editor," see attached video
Icon Editor is an excellent native OS4 Icon Editor, but there is also AROS x86 version, you can also find it on my AROS One.
I use an OS3 version which is faster, more qualitative but the OS3 version was never Distributed, use your own copy from Betatester.
You have to be careful, "Icon Editor" if run on OS4, will produce native OS4 Icons (a kind of PowerIcons), while on AROS and OS3 the icons produced with Icon Editor will be standard Dual-PNG.
On AROS and OS3 the developer was telling me that there are some things missing to be able to create them Native OS4 Icons, I'm fine with that anyway, I prefer better Dual PNG Icons.
To create good Glows the images, They must have excellent transparency, must be smaller than the actual size of the image, this is to have a transparent space on its edges, otherwise you will get a bad Glow.
The Glow can be of different colors, for example on White icons Yellow Glow is not good, I for white icons use the various effects, mirror or other effects, or an internal Glow created on Paint, see attached video
Small Tutorial on Icon Editor :
https://drive.google.com/file/d/1AyTjBFP0J29GnLfNBfTiGB-lOOERbQGI/view?usp=sharing