Yesterday’s iPhone 3.0 software download from Apple included a new Voice Memos application. The Voice Memos application allows you to record sound, save it, and email it.

Of course, the first question I asked was, “How can I get it into my Twitter feed?”

Here’s how:

1) Set up a free account with Posterous.com. Posterous allows you to post text, video, big pictures, or audio from remote sources such as your phone.

2) Configure your social networking feeds on Posterous. If you only want to send your voice memo updates to Twitter then you only have to set up the Twitter account. Make a note of your posting email address.

3) Record your Voice Memo using your iPhone.

4) After you’ve saved the Voice Memo, open the memo item and click on the Share button and select “Email Voice Memo.”

5) Enter your Posterous posting email. If you configured several social networks, you can just use the “post” email and it will post to all at the same time. I only set up Twitter for now so I will only post to the “twitter” version of the Posterous email.

This is the tweet that was generated when I posted late last night:

Testing iPhone Voic[e] Memo to Twitter via Posterous http://post.ly/sZA

The second time you need to post a Voice Memo from your iPhone, you only need to follow Steps 3-5, and can easily do so while on the go!