[reyostallenberg]

A radio app in which you can make a schedule on what stream you listen at what time, so you can listen to programs you like off multiple radiostations without the switching interaction

[telesilla]

Many radio stations issue their programs as individual podcasts these days, so I find I can use a podcast manager to get much of what you seem to be asking for.

[pjmq]

I built that into my past music service of mine. It's a novel feature but was ultimately, little used, at least in that configuration.

[toast0]

It seemed like TuneIn was maybe supposed to be that (but it also seemed like TuneIn was too much work, so I abandoned without using it)