Thank you for taking the time to post and welcome to the Bose Community.
In regards to your query, the SoundTouch app will provide the available platforms to stream music from when you go to 'Add Service' in the Settings. For any other stations or services, you will either have to look to stream the audio via Bluetooth or to manually add a station with a custom URL.
Streaming via a custom URL may be the more preferable option in your case. To go about this, try the following steps:
Give that a try and let me know how you get on.
Sam F - Community Support