I already had the Mobile In from Line 6 and I heard that bad on this accessory.
Now, after testing, I would say that for mobile use, the plug has helped me greatly amuse myself on my iPhone with Garage Band.
If you are looking for a reasonably priced accessory and lets you enjoy yourself without bothering those around you (because you can plug in your headphones), I found this great tool.
Your turn ... I'm going to train for my little woman looks at her series on TV.