- Remove functionality for converting .wav files, and rely on .aac fi…

…les having embedded metadata rather than the presence of an associated metadata.txt file.

- Pass filename to upload api.
- Handle some unhandled errors.

cmd/thermal-uploader/uploadjob.go

@@ -194,12 +194,7 @@ func (u *uploadJob) uploadFile(apiClient *api.CacophonyAPI) (int, error) {
 	if err != nil {
 		return 0, err
 	}
-	defer func(f *os.File) {
-		err := f.Close()
-		if err != nil {
-
-		}
-	}(f)
+	defer f.Close()
 	return apiClient.UploadVideo(bufio.NewReader(f), data)
 }