Creating a custom soundscape for your workday is the most effective way to guarantee a consistent mental environment regardless of where you are sitting. Relying on a live stream is a gamble because any lag or sudden disconnect can break your flow and make it hard to get back into the zone. I suggest finding a resource that allows you to see the file duration and quality before you commit to saving it to your hard drive. This way, you can keep your files organized in a dedicated workspace folder. Having your own copies of the files gives you the freedom to stay productive even in airplane mode