Depending on the resolution on the device displaying the page, a popup button could also work. [0-9 - Z] like a square box you click the letter and it takes you to the letter of the artist you selected.
I would like to thank all the developers for staying on top of this project and striving to continue to make it better. For so long people have been trapped using iTunes, Jrivers, or buying overpriced buggy,unfinished, lack of updates HIfi music systems, I’ve used Olive music servers, Cocktail Audio and the worst player ever Nativ Vita. Volumio is simple, works perfectly