Lost audio control due to usb speakers

after connecting a CharWise C5 Laptop Cooling Pad with Speakers (Mukii INC.) I lost control over audio in my macbook pro. and some programs have no sound. the audio Icon is grayed and when I press the audio control buttons on my keyboard I get gray icon with the disabled sign on it.
I tried going to the preferences and select the internal speakers, it doesn't help.
also when I connect my headphoes and press the volume control I get the same disabled icon.
but I can hear sound in several programs like Adobe applications and vlc player. I get no sound at all in quicktime, iTunes doesn't play music and I can't hear sound from internet browsing.
the Macbook Pro is 3 months old. but I have no time to take it to the store as I need it to work.
Last time I updated my software through the App Store I got my audio control back after restart, next time I restarted I lost it again...
I'm using OS X Mountain Lion - updated.
How do I fix this?
how do I remove the drivers of the usb speakers?
please help

If you're really really stuck you could connect it to the PC via the headphone socket to the line-in socket on the PC, then record the output.

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Lost audio control after update

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ok fixed the problem. it was my external usb headphones that were wedged against the wall taking control of my sound. nothing to do with mac hardware or software. usb . . . i am getting bluetooth headphones tomorrow!

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****Click the White thumb to say thanks****
****Please mark Accept As Solution if it solves your problem****
****I don't work for HP****
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The script I use with pulse.
#/bin/bash
# paswitch 2011-02-02 by Ng Oon-Ee <[email protected]>
# I can't remember where I found this script, can't locate the original author.
# Please inform me if you know, so that I can give proper attribution.
# CHANGES: Added auto-move all inputs to new default sound card.
# WAS: Pulse Audio Sound Card Switcher v1.0 2010-01-13
# Switches between soundcards when run. All streams are moved to the new default sound-card.
# $totalsc: Number of sound cards available
totalsc=$(pacmd "list-sinks" | grep index: | wc -l) # total of sound cards: $totalsc
if [ $totalsc -le 1 ]; then # Check whether there are actually multiple cards available
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exit
fi
# $scindex: The Pulseaudio index of the current default sound card
scindex=$(pacmd list-sinks | awk '$1 == "*" && $2 == "index:" {print $3}')
# $cards: A list of card Pulseaudio indexes
cards=$(pacmd list-sinks | sed 's|*||' | awk '$1 == "index:" {print $2}')
PICKNEXTCARD=1 # Is true when the previous card is default
count=0 # count of number of iterations
for CARD in $cards; do
if [ $PICKNEXTCARD == 1 ]; then
# $nextsc: The pulseaudio index of the next sound card (to be switched to)
nextsc=$CARD
PICKNEXTCARD=0
# $nextind: The numerical index (1 to totalsc) of the next card
nextind=$count
fi
if [ $CARD == $scindex ]; then # Choose the next card as default
PICKNEXTCARD=1
fi
count=$((count+1))
done
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# $inputs: A list of currently playing inputs
inputs=$(pacmd list-sink-inputs | awk '$1 == "index:" {print $2}')
for INPUT in $inputs; do # Move all current inputs to the new default sound card
pacmd move-sink-input $INPUT $nextsc
done
# $nextscdec: The device.description of the new default sound card
# NOTE: This is the most likely thing to break in future, the awk lines may need playing around with
nextscdesc=$(pacmd list-sinks | awk '$1 == "device.description" {print substr($0,5+length($1 $2))}' \
| sed 's|"||g' | awk -F"," 'NR==v1{print$0}' v1=$((nextind+1)))
#notify-send "Default sound-card changed to $nextscdesc"
dbus-send --session --type=method_call --reply-timeout=10000 \
--dest=org.freedesktop.Notifications /org/freedesktop/Notifications \
org.freedesktop.Notifications.Notify string:"paswitch" uint32:1 \
string:$icon_name string:"Default sound card is now" string:"$nextscdesc" \
array:string:"" dict:string:string:"","" int32:3000
exit
# Below text was from original author and remains unaltered
# CC BY - creative commons
# Thanks God for help :) and guys lhunath, geirha, Tramp and others from irc #bash on freenode.net

No Audio after switching from Headset/Speakers

Product : Sound Blaster Z
OS : Windows 7 Ultimate x64
Issue : No audio when switching from headset to speaker or speaker to headset
Description : I used to have it working perfectly fine before I formatted my computer. I could be playing a game or watching a movie using my speakers, then I would use the switch in the SB Control Panel to make it play through my headphones and everything would work. Now if I do that, I loose the audio from that program that is currently running. Meaning I have to restart the program and the audio will come through the specified audio device. Sounds like the windows setting "Allow applications to take exclusive control of this device" is acting up, but I have tried this with both the setting on and off.
Any help is appreciated.

AFAIK some applications loose audio on switch, while others don't.
are you saying the same app once didn't loose audio on switch, now does after a format ?
in other words, do you believe that before the format nothing ever lost audio on switch ? that would mean there's a way to solve it, as most of us, if not all, are having that same issue (which is Creative's fault, not Microsoft's).

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Why does new iMac not recognize external usb speakers when connected to the back of the unit. It only recognizes them when connected to a usb hub or the additional usb ports on the wired keyboard? I'm receiving distortion from dac which I suspect is due to low signal strength.

there is no such thing as usb speakers
all usb speakers being that usb don¨'t carry audio at all
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Lost audio control due to usb speakers

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