Asterisk *20 instead of space

[simoncn]

This URL is correct and valid. You should be able to use it "as is" in a .m3u playlist (including the http prefix). If a control point can't handle the '*' characters, this is a bug in the control point.

However, normal practice would be to use a file path instead, preferably a relative path in case your library is ever moved. For example, if your .m3u playlist is located in the Music1 folder, the relative path would be:

Canterbury/Art Bears/1978 Hopes And Fears (Mini LP SHM-CD Belle Japan 2015)/01 - On Suicide.flac

with no http prefix.

In past I have recommended oddgravity Playlist Creator as a simple way to create .m3u playlists in this format. It appears the oddgravity website no longer exists but the program can still be downloaded from this page.