Update Jellyfin.Api/Controllers/SessionController.cs

Co-authored-by: Claus Vium <cvium@users.noreply.github.com>

Jellyfin.Api/Controllers/SessionController.cs

@@ -166,7 +166,7 @@ namespace Jellyfin.Api.Controllers
         {
             var playRequest = new PlayRequest
             {
-                ItemIds = new[] { itemIds },
+                ItemIds = itemIds.Split(','),
                 StartPositionTicks = startPositionTicks,
                 PlayCommand = command
             };