Ensure voice downloads are authenticated

model.go

@@ -90,7 +90,8 @@ type VoiceServerUpdate struct {
 type VoiceProcessingData struct {
 	io.ReadCloser
 
-	Client *http.Client
+	node *Node
+
 	UserID string
 	URL    string
 	File   string
@@ -99,7 +100,11 @@ type VoiceProcessingData struct {
 }
 
 func (v *VoiceProcessingData) open() error {
-	res, err := v.Client.Get(v.URL)
+	req, err := http.NewRequest(http.MethodGet, v.URL, nil)
+
+	req.Header.Set("Authorization", v.node.config.Password)
+
+	res, err := v.node.client.Do(req)
 
 	if err != nil {
 		return err

node.go

@@ -208,7 +208,7 @@ func (node *Node) onEvent(v *fastjson.Value, msg []byte) error {
 		track := jsonStringValue(v, "track")
 
 		data := &VoiceProcessingData{
-			Client: node.client,
+			node:   node,
 			UserID: jsonStringValue(v, "userId"),
 			URL:    fmt.Sprintf("%s/audio/%s", node.config.REST, track),
 			File:   track,