rate -> kbps

Signed-off-by: Carl Pearson <me@carlpearson.net>

workers.go

@@ -277,7 +277,7 @@ func cleanupTranscodes() {
 		err := db.Where("status = ?", "pending").
 			Order("CASE " +
 				"WHEN dst_kind = 'video' AND height = 540 THEN 0 " +
-				"WHEN dst_kind = 'audio' AND rate = 96 THEN 0 " +
+				"WHEN dst_kind = 'audio' AND kbps = 96 THEN 0 " +
 				"ELSE 1 END").First(&trans).Error
 		// err := db.First(&trans, "status = ?", "pending").Error
 		if err == gorm.ErrRecordNotFound {