will Line Out Dock LOD Adapter For Sansa Fuze bypass headphone jack?

On my oldest Fuze the sound cuts out some if you bump the headphone jack, then goes back to normal when not bumped.  I know the headphone jack can have issues.  Everything else works just fine.  I found a

New Line Out Dock LOD Adapter For Sansa Fuze MP3 Player To Headphone Amplifier


on ebay.    What I want to know if I plug this into the Fuze and plug the head phones or speaker into the adaptor will it work like you are just plugged into the headphone jack?  Can you adjust the volume from the Fuze like normal?  I just though that if I could bypass the headphone jack I could get a few more years out of my beloved Fuze.  Thanks