Mac OS forum


Sound Trouble: MP3s/Videos silent

by sandsystems / November 27, 2012 7:53 AM PST

I am running 10.6.8 on a 2ghz Intel Core Duo Imac. I am an old OS 9 technician... not quite as saavy with OS X and the kernal/terminal/console, etc.

Yesterday evening, I began to have an unusual problem during an attempt to record some audio (in audio hijack pro). Soundflower was installed as part of that package. When I tried to listen to the resulting AIFF files by opening them in Get Info and hitting the play button, there was no sound. I checked the settings, they were fine, and the output was working (i.e. clicking to speakers/headphones when volume is incremented).

At first I thought something obvious was amiss, so I reset my equipment (I had an Alesis USB mixer attached which I removed), I decided to update the USB mixer and downloaded a firmware update for it from Alesis. When I ran it, I had a kernal panic. I am fairly sure the problem existed prior to this. Also, earlier in the day, there was inexplicable echoing in skype (an abnormal sort which I thought was the other client).

I rebooted, checked my preferences, and tried again. Nothing. I opened Itunes, Mp3 files would appear to play but produce no sound. So, too with videos and recordings in Photo Booth. I rebooted. I re-installed Itunes. Same result.

As I have an older OS (10.4) on an external, I booted to that, and played MP3 files in itunes without trouble (i.e. this is not a hardware issue).

I rebooted from my internal, and the problem persists. It is not a simple matter to re-install the entire system (in fact, it could take days), so I am hoping for another solution, and, perhaps, some help with diagnostics (particularly things I can check in logs or terminal). Any non obvious advice appreciated.

It appears to be a system component corruption problem from what I can gather so far. I get sound on stuff in youtube videos and things like that, just not for local MP3 files, or videos. Other sound functions appear normal.

What I have done: complete re-install of OS X 10.6.2 + all updates.


Uninstall Soundflower

I would greatly appreciate diagnostic help and suggestions other than wipe/blast/remake the system...

Answer This Ask For Clarification
Discussion is locked
You are posting a reply to: Sound Trouble: MP3s/Videos silent
The posting of advertisements, profanity, or personal attacks is prohibited. Please refer to our CNET Forums policies for details. All submitted content is subject to our Terms of Use.
Track this discussion and email me when there are updates

If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem. Also please exercise your best judgment when posting in the forums--revealing personal information such as your e-mail address, telephone number, and address is not recommended.

You are reporting the following post: Sound Trouble: MP3s/Videos silent
This post has been flagged and will be reviewed by our staff. Thank you for helping us maintain CNET's great community.
Sorry, there was a problem flagging this post. Please try again now or at a later time.
If you believe this post is offensive or violates the CNET Forums' Usage policies, you can report it below (this will not automatically remove the post). Once reported, our moderators will be notified and the post will be reviewed.
Collapse -
Clarification Request
Further Data
by sandsystems / November 27, 2012 8:39 AM PST

Soundflower was uninstalled.
When I log in as my ghost user (a troubleshooting account) everything is fine. Same OS, same disk, different user.

Collapse -
This may be a little simplistic, but,
by mrmacfixit Forum moderator / November 27, 2012 8:38 PM PST
In reply to: Further Data

Did you check the Sound Preferences in the System Preferences app?

I have found that installing something to do with Audio, be it as obscure as Skype, will sometimes change the Sound Output preferences so that instead of using the built-in speakers, the Audio output is directed somewhere else.

Take a look


Collapse -
by sandsystems / December 4, 2012 10:46 AM PST

I did check that and it had no effect. I am on the same machine now with a new user. The problem still exists (and I would like to solve it) for the old account...

Collapse -
(NT) Did you remove SoundFlower, as previously suggested?
by mrmacfixit Forum moderator / December 4, 2012 8:33 PM PST
In reply to: Reply
Collapse -
by sandsystems / December 4, 2012 11:05 PM PST

If you read the thread, you will see that I did.

Collapse -
(NT) Ooops,
by mrmacfixit Forum moderator / December 5, 2012 11:17 AM PST
In reply to: Reply

All Answers

Collapse -
I got nothing. Well a little.
by R. Proffitt Forum moderator / November 27, 2012 8:29 AM PST
Popular Forums
Computer Help 49,613 discussions
Computer Newbies 10,349 discussions
Laptops 19,436 discussions
Security 30,426 discussions
TVs & Home Theaters 20,308 discussions
Windows 10 360 discussions
Phones 15,802 discussions
Windows 7 7,351 discussions
Networking & Wireless 14,641 discussions

Smart Home Help

Light bulbs you shouldn't buy

There are plenty of dimmable LED light bulbs, but make sure you don't buy the ones that flicker when you dial them down.