Prevent error if no players found

Signed-off-by: AKP <tom@tdpain.net>

internal/providers/audioPlayer.go

@@ -39,6 +39,13 @@ type playingAudioInfo struct {
 func (g *AudioPlayer) getInfo() (*playingAudioInfo, error) {
 	rawMetadataOutput, err := runCommand(playerctlExecutable, "metadata")
 	if err != nil {
+		// If there's no player open, an error will be thrown by this command
+		// with the below stdout
+		if string(rawMetadataOutput) == "No players found" {
+			return &playingAudioInfo{
+				Status: playerStatusUnknown,
+			}, nil
+		}
 		return nil, err
 	}
 

internal/providers/providers.go

@@ -11,7 +11,11 @@ func runCommand(program string, args ...string) ([]byte, error) {
 	cmd := exec.Command(program, args...)
 	out, err := cmd.Output()
 	if err != nil {
-		err = fmt.Errorf(`failed to execute "%v" (%+v)`, strings.Join(append([]string{program}, args...), " "), err)
+		ne := fmt.Errorf(`failed to execute "%v" (%+v)`, strings.Join(append([]string{program}, args...), " "), err)
+		if x, ok := err.(*exec.ExitError); ok {
+			return bytes.TrimSpace(x.Stderr), ne
+		}
+		return nil, ne
 	}
 	return bytes.TrimSpace(out), err
 }