error if the sndioctl cmd is not found

copyright to the fsf

use defcustom instead of defvar for user-customizable stuff

fmt

switch to gpl

bump copyright year

missing autoload cookie

enable hl-line-mode in the popup window

don't expect the buffer to be called exactly *sndio*

add a popup window for quicker interaction

rewind to the start of the buffer

small adjustment

update the right line without the (beginning-of-line), if the cursor is after the equal sign, we would update the wrong line.

typo

initial commit