I have a toshiba satellite l505 and my headphone has been loosened, as in someone put something in it that was too big. do you know where or how i can and should get it replaced?

Unfortunately, the phone jack is soldered to the motherboard. You can see it this guide: http://www.irisvista.com/tech/laptops/Toshiba-Satellite-L505-L505D/remove-laptop-motherboard-1.htm (STEP 23).
If the phone jack is damaged, it has to be de-soldered and replaced with a new one.
Alternatively, you can de-solder the microphone jack and solder it instead of the damaged headphone jack. I believe these two jacks are similar.

Toshiba P100 – in disassembly I damaged the cable connecting the motherboard to the audio board. I will not be able to repair it. Where do I look, generically, for a replacement? To Toshiba or the aftermarket ? At this point I am new to the sourcing of laptop parts.

I really doubt that you can find this connector anywhere. Toshiba doesn’t sell them separately.
Maybe you can use this technique in order to fix the connector? http://www.laptoprepair101.com/laptop/2009/11/17/fix-broken-keyboard-connector-on-laptop-motherboard/
I think you have same type of the connector.

ps. I am looking to contact the creator of the amazing Toshiba disassembly guides published at http://www.irisvista.com. I would appreciate an email or forum address.

my satellite a30 sounds sometimes it works,sometimes it doesn’t,could anyone plz help me?

Try reinstalling the operating system from scratch. If the problem with sound still there, most likely the sound card is not working properly.
Unfortunately, the sound card is integrated into the motherboard. If the sound card failed, you’ll have to replace the entire motherboard.
You can use this guide: http://www.irisvista.com/tech/laptops/toshiba-satellite-a35/complete-disassembly-1.htm

Repairman, please help me. ^_^

I accidently tripped over the headphone cable and broke the audio connector inside the laptop. Is it possible to repair this connector without replacing anything?

It’s hard to tell without looking at the damage. The audio jack is soldered to the motherboard.
It is necessary to disassemble the laptop and take a closer look at the jack inside. Maybe it just needs to be resoldered. Maybe it has to be replaced.