Fresh clears your list and scans everything from scratch. Update keeps what you have and just fills in anything new or changed — faster if you've moved a few miles.

Some FM stations hide a second audio channel in the ultrasonic range of their broadcasts. It's used for things like reading services for the blind. Rare, but this lets you tune it.

Normally the radio starts with a safety cushion and only speeds up once it trusts your connection. This skips all of that and runs as fast as possible immediately — great on a wired network, but on anything flaky the audio will stutter and it won't back off on its own.

How hard your radio works on amplifying signals - Cranking this too high will ruin your reception.

Choose analog FM audio behavior. Auto blends stereo based on signal quality; Mono and Stereo force the decoder.

Powerful stations tend to ghost onto weaker stations even when your gain is set correctly. This slider tries to move the ghosts out of the way.