Broken headphone jack, tried to replace, but...
Ive got a new hold switch/headphon
Unfortunately, I'm aware of anywhere that sells just the clip.
Some have had nominal success with electrical tape holding down the cable, but this is temporary and not very likely to work.
Your best bet is most likely to purchase a dead logic board off of eBay and carefully scavenge the clip.
that happen to me with an iphone and I just had to use an electric style putty/rubber cement to fix it. I tried the electric putty on one item and haven't had a problem. However I quickly relies that with the putty it would make it difficult to re-repair if needed so i went with the rubber cement and it works great on my iPod for this purpose.
Hope this helps Ciao,