Pseudo Example
#EXTM3U
#EXTINF:-1,Station 1
stream_url_for_station_1
#EXTINF:-1,Station 2
stream_url_for_station_2
...etc.
Replace the station name and streaming url (bold text) with the one for the radio station you wish to use. The order of appearance is the order of the items in the radio station list in the app after download of the playlist file.
The app supports the http(s) protocol for streaming urls in various formats.
m3u- or pls-file
e.g. http://.../station.m3u
e.g. http://.../station.pls
url-only
e.g. http://address
mp3 file
e.g. http://.../station.mp3
The playlist text file must be downloadable by using the http(s) protocol so you need to place it on a web server. Alternatively you can place it on a Cloud Drive of your choice and share it to get a http(s) shared link:
Google Drive
Share the text file with read only access. You will get a link in the following format
https://drive.google.com/file/id/d/<YOUR FILE ID>/view?usp=sharing
Convert the link into a direct download link
https://drive.google.com/uc?export=download&id=<YOUR FILE ID>
This is the link you have to use in the watch app.
Microsoft OneDrive
Create an Embed Content Link. You will get a link in the following format
https://onedrive.live.com/embed?cid=<YOUR FILE ID>&resid=<YOUR FILE ID>%<some number>&authkey=<YOUR AUTH KEY>
Convert the link into a direct download link
https://onedrive.live.com/download?cid=<YOUR FILE ID>&resid=<YOUR FILE ID>%<some number>&authkey=<YOUR AUTH KEY>
This is the link you have to use in the watch app.
Start the App on the Watch
Go to Settings, "Online Playlist Download"
Enable/Check "Use Playlist"
Tap "Enter http url (.m3u)"
Insert the direct download link
Other cloud drive providers will use a similiar procedere to create a shared link.