Internal speakers working fine, headphone jack is dead. Help!

[cracksauce]

MacBook Pro 2.45 GHz (Late 2007 or Early 2008)

A few days ago I began hearing some strange high frequency noises coming from my internal speakers, and even higher noises when headphones or my external speakers were plugged in. A day later, the noise was only coming from the internal speakers and the headphone jack no longer works. I have the speakers plugged in and the sound still comes from the internal speakers with intermittent high frequency noises and whistling. I'm trying to get back my speakers or headphones in working order.

I've searched for hours and I'm stumped.
I've reset the PRAM and NVRAM, as well as the SMC. Also jiggled a toothpick in the jack, checked system prefs but it seems that theres no input detected, and installed something called soundsource to switch the inputs but I have absolutely no luck.

I want to see if someone can help out before I take it to the Apple store to be looked at and avoid spending a lot of money.

Cliffnotes:
Headphone jack does not work, sound still comes out of internal speakers even when connected.

Thanks in advance to anyone who can help!!

[earthsaver]

If sound comes out of the internal speakers when headphones are connected, then perhaps sound preferences are not right. When plugged in, what output source is set?

[cracksauce]

If sound comes out of the internal speakers when headphones are connected, then perhaps sound preferences are not right. When plugged in, what output source is set?

This is what it looks like. When I connect the headphones, nothing changes.

[earthsaver]

With the audio out jack not appearing at all, I wonder if there's an internal cable loose. Do you have AppleCare? It's probably an easy in-warranty fix.

[cracksauce]

I actually dont have apple care
If I did take it in to get fixed, do you know how much it'd cost to have it done?

Thanks!