Slipstream Intros, Outros and Other Multimedia Into Talkshoe Calls

So, if you’ve noticed, I’m kind of a perfectionist about podcasts I do. It was one of my downfalls when I did the Suicide Fan sports show awhile ago. I wasted so much time getting details right that I finally gave up as it wasn’t my full time job and I ended up spending hours for little return.

Then, at the beginning of the year, Geoff and I decided to do a Blog Talk Radio show that would eventually become District of Corruption

The sex appeal about doing a BTR show was there was no production. We called in at a set time, the show started automatically and ended when we said it would. BTR would record the show and give us an MP3. If we wanted to do editing, we could, but we rarely did.

Eventually, things started taking more time. We headed over to Talkshoe and started doing the show over there. One of the nice things about Talkshoe was the ability to upload an edited version. The bad part was that, unlike BTR, we couldn’t slip our really cool intro music into the mix.

The OCD in me started going nuts and I started looking for solutions.

Then, I decided to start up The Aaron Brazell Show, an eclectic show that is disjointed from due to it’s wide variety of subjects (We have some doozys coming in the next few weeks). My new friend, Spam (I’m not even kidding!), works at a local radio station and offered to make a killer intro for the show. I took him up on the offer and it really was killer. Though there has been revisions that I’ll using going forward, you can hear what he originally produced here.

As you can hear, this is an awesome intro and I certainly didn’t want to only include it in post edits after the live show was done. I had to figure out how to slipstream the audio into my live stream.

Here are the steps I took with Mac OS X to handle this. The total cost (USB headset not included) – $61.50.


Also needed, for this setup, is a Mac OS X and a USB headset. You can go much better than this with a mixer and a studio mic with a dedicated phone line. This is the poor mans way – my way.

The Concept

The basic premise here is real simple. I have one way to talk to Talkshoe and that is via the phone. Skype is a good phone-to-bridge method and tends to provide the best audio for such a program. Skype provides one way in and one way out for my interaction with Talkshoe. Think Line In/Line Out.

Therefore, if I want to include my intro MP3, I have to get it into my Skype stream. Windows provides some nifty Skype plugins but I have yet to find a decent one for Mac. I do have iTunes though and with that, I can even set a custom “playlist”, should I want to include other pieces of audio throughout the show.

Somehow, I need to merge my iTunes audio with my USB mic audio. Solution.


In the pro audio world, the way to pass sound around is via cables. Quarter inch cables. XLR cables. Speaker cables. Snakes. There’s a million kinds of cables. In the Mac software digital world, there’s Soundflower. Soundflower is your virtual cables for typing sounds together and shooting them around to other places. Soundflower appears in sound devices as yet another audio device, both input and output.

Audio Hijack Pro

AHP is a fantastic little utility that wrangles sound in the Mac world. Though I’m quite convinced that I have no clue what all it is capable of, needless to say, it can do just about anything sound related. In my little setup, I’ve opted to “hijack” my Logitech USB headset and send it to Soundflower. Screenshot.

If I were to click the Hijack button, this rerouting of audio would begin happening. However, I’m not done yet. You see, one of the powerfully hidden things about AHP is it’s ability to hijack an applications audio and piggy-back it on the back of another hijacked audio stream.

Enter Application Mixer.

Under the effects tab, there’s a grid. Click on one of the empty grid boxes and a context menu will appear. Lots of options, but the key one is 4FX Effect -> Application Mixer. This will prompt another dialog box where I select iTunes and click the relevant Hijack button. iTunes needs to be relaunched – this is okay.

Now, I’ve merged my iTunes audio (where I’ll play my intro MP3) with my USB mic and sent the combined signal out over Soundflower. To where, though?


I recommend the SkypeOut purchase as I do a lot of these. I paid for a year. You can pay a $2.95/mo fee if you’d like. Whatever works. Unfortunately, the Skypers haven’t figured out that both Windows and Mac have built in audio device controls so they have recreated the wheel by providing separate audio control from the Operating System.


In preferences, I’ve set my Audio Output to be my USB Headset (allowing me to hear Talkshoe) and my Audio Input to be Soundflower 2ch. The beauty here being that I can call in to my Talkshoe show and play whatever audio files I want from iTunes directly into the show.

Eliminating after-event post-production. For. The. Win. You can hear the final result of the slipstreamed audio here.