VCAST Music Disables MP3 Playback

this is just my opinion, but would the quality loss even be noticable on your small ass phone speakers or through headphones? I know the loss of quality might become more aparent if you are blaring music in your car stereo or rattling your windows with your home system, but through a headset or your phone speakers? I would guess you would need a massive loss of quality to hear a difference on these devices