An in-vehicle audio browser includes a first set of buttons that are
configured to select a preset item. A second set of buttons move forward
and backward through a list of items in the audio browser. A third button
selects among multiple bands associated with the audio browser. A fourth
button activates a function that varies depending on the selected band.
The audio browser supports primary audio control bands that affect the
audio outputs when selected and conditional audio control bands that do
not affect the audio output unless some action on the band requires audio
output.