New Projects - Fresh from the Labs

audiopreview—Multimedia Previewer (audiopreview.codealpha.net)

I love niche programs, especially in the area of multimedia. If you're like me, you probably have a folder full of MP3s and Oggs collected from the last ten years that's reached the point where you've forgotten half the files in there. This month, I stumbled upon the charming little command-line program, audiopreview. To quote the project's Freshmeat entry:

audiopreview is a command-line tool that plays previews of many audio file types (Ogg, MP3, etc.), video file types (AVI, MPEG, Real, etc.), and Internet streams. It also can be used as a regular command-line media file player (that is, play the files entirely like yauap or mpc123 would).

audiopreview is a simple and easy command-line program for previewing large numbers of music files.

Although the name may suggest otherwise, audiopreview also plays video files.

Installation

Packages for audiopreview are available in Debian/Ubuntu format or the usual source. If you're running with the source, according to the man page, you need the following libraries: gstreamer0.10-plugins-base, gstreamer0.10-plugins-good, gstreamer0.10-plugins-bad and gstreamer0.10-plugins-ugly.

I found I also had to install the intltool library to get past the configure script. Once you have the library side of things sorted out, compile the program with the usual:

$ ./configure
$ make

If your distro uses sudo:

$ sudo make install

If your distro doesn't:

$ su
# make install

Usage

Using the actual command can be as simple as entering the folder where the files you want to hear are located and entering:

$ audiopreview *

(The * is used to indicate all the files in a folder.)

Once the program is running, you'll be greeted with a simple track listing, along with other relevant information in purple. As far as controls go, the spacebar pauses and unpauses the stream, N plays the next stream, and P plays the previous stream. R restarts the current stream, and Q stops playing and exits the program.

That's the basic usage out of the way, but let's refine it with some command-line switches to hone your usage. For new Linux users, these are added at the end of the command, like this:

$ audiopreview files-to-play --switch

If you plan on using audiopreview to play a whole song instead of in segments, use the switch --entirely or -e.

If you want audiopreview to start over again after the last song has been played, use --loop or -l.

As mentioned previously, audiopreview also can play some video formats. However, this being a command-line program, there's a good chance you may not have X running. If so, you'll want to disable the video to avoid errors. To do so, enter --no-video.

The default starting position for each file seems to be random, which might become annoying for those looking for more specific sections of a song. Thankfully, you can specify which section of a song you want to hear with a simple numerical switch. Add: --position=POSITION or -p POSITION, and replace POSITION with the numbers 0, 1, 2 or 3. 0 sets the position to the beginning, 1 to the middle, 2 to the end, and 3 makes the start position random.

Last but not least, engage the all-important shuffle function with --shuffle or -S. For example:

$ audiopreview *.mp3 -p 1 --shuffle

The above command plays all the MP3 files in a directory, sets the starting position to the middle of a song and shuffles the order in which they're played.

You can work out the rest from here, but honestly, do yourself a favor and check out the man page with:

$ man audiopreview

Ultimately, audiopreview fills a nice little niche that will appeal to anyone sorting through large collections of music (and some video) files. DJs in particular will find this of real use, but I found it great for rediscovering songs I hadn't listened to in years. Love it.

______________________

John Knight is the New Projects columnist for Linux Journal.

Webcast
How to Build an Optimal Hadoop Cluster to Store and Maintain Unlimited Amounts of Data Using Microservers

Realizing the promise of Apache® Hadoop® requires the effective deployment of compute, memory, storage and networking to achieve optimal results. With its flexibility and multitude of options, it is easy to over or under provision the server infrastructure, resulting in poor performance and high TCO. Join us for an in depth, technical discussion with industry experts from leading Hadoop and server companies who will provide insights into the key considerations for designing and deploying an optimal Hadoop cluster.

Learn More

Sponsored by AMD

White Paper
Private PaaS for the Agile Enterprise

If you already use virtualized infrastructure, you are well on your way to leveraging the power of the cloud. Virtualization offers the promise of limitless resources, but how do you manage that scalability when your DevOps team doesn’t scale? In today’s hypercompetitive markets, fast results can make a difference between leading the pack vs. obsolescence. Organizations need more benefits from cloud computing than just raw resources. They need agility, flexibility, convenience, ROI, and control.

Stackato private Platform-as-a-Service technology from ActiveState extends your private cloud infrastructure by creating a private PaaS to provide on-demand availability, flexibility, control, and ultimately, faster time-to-market for your enterprise.

Learn More

Sponsored by ActiveState