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I looked over those items briefly. They look promising for collecting ID3 tag information out of the MP3. This resolves half of my needs so I'll at least throw you partial credit for those nice finds.<br />
<br />
My problem that still remains is...<br />
If a user uploads an Mp3, Before reading the ID3 tags via PHP, I need something running in the background that looks for newly uploaded files and analyzes them in a way that updates the ID3 tags with the detected tempo of the song? It doesnt have to be PHP but it needs ot be something that can run on a server via command line as the server will have remote SSH access but will not be running any desktop GUI.<br />
<br />
any ideas where to begin and/or what language this could be done in??
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Does the program you linked to calculate the BPM from the song info, or does it get it from the ID3 tag?<br />
If it is in a tag, the CPAN modules should be able to get the info for you.<br />
<br />
As for having something look for newly uploaded files, you could either have the cron (scheduler on windows) run a program every so often, or have a program running continuously that checks every so often. &nbsp;This could be written with perl. &nbsp;If you want help with this part of it, just let us know.
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the part im looking for direction is...<br />
<br />
on a linux server with no desktop GUI, running a script that will take an mp3 and detect the bpm of it. Lets assume the ID3 tag is empty. What language could accommodate this and/or how could this be done?
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I will have a linux web server either fedora or ubuntu running a LAMP setup php/mysql website...<br />
<br />
Does anyone know how or can you point me in the right direction on what language would be able to do the following?<br />
<br />
1) look in a folder for newly created mp3 files<br />
2) analyze the Mp3 and figure out its tempo (like 110 beats per minute)<br />
2A) if possible, probably very difficult but detect whether the beat is constant like a techno beat 4x4 or if its a broken beat like a rock beat.<br />
3) collect the tempo and beat info and store it in the local mysql database along with the filename<br />
<br />
Im very proficient in PHP but i dont think its possible with php alone... ? <br />
Im looking to have a cron run that would kick this into gear like once or twice a day and then update the mysql database with the filename and tempo.<br />
<br />
Something like this... but with mysql support?<br />
<a href="http://linux.softpedia.com/progScreenshots/BPM-Detect-Screenshot-20334.html" rel="ugc">http://linux.softpedia.com/progScreenshots/BPM-Detect-Screenshot-20334.html</a><br />
<br />
any ideas??<br />

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I will have a linux web server either fedora or ubuntu running a LAMP setup php/mysql website...

Does anyone know how or can you point me in the right direction on what language would be able to do the following?

1) look in a folder for newly created mp3 files
2) analyze the Mp3 and figure out its tempo (like 110 beats per minute)
2A) if possible, probably very difficult but detect whether the beat is constant like a techno beat 4x4 or if its a broken beat like a rock beat.
3) collect the tempo and beat info and store it in the local mysql database along with the filename

Im very proficient in PHP but i dont think its possible with php alone... ? 
Im looking to have a cron run that would kick this into gear like once or twice a day and then update the mysql database with the filename and tempo.

Something like this... but with mysql support?
http://linux.softpedia.com/progScreenshots/BPM-Detect-Screenshot-20334.html

any ideas??


Linux coding... how to collect Beats Per Minute of a mp3??

PHP is a widely-used server-side scripting language especially suited for web development, powering tens of millions of sites from Facebook to personal WordPress blogs. PHP is often paired with the MySQL relational database, but includes support for most other mainstream databases. By utilizing different Server APIs, PHP can work on many different web servers as a server-side scripting language.

A scripting language is a programming language that supports scripts, programs written for a special run-time environment that automate the execution of tasks that could alternatively be executed one-by-one by a human operator. Scripting languages are often interpreted (rather than compiled). Primitives are usually the elementary tasks or API calls, and the language allows them to be combined into more complex programs. Environments that can be automated through scripting include software applications, web pages within a web browser, the shells of operating systems (OS), embedded systems, as well as numerous games. A scripting language can be viewed as a domain-specific language for a particular environment; in the case of scripting an application, this is also known as an extension language.

Scripting Languages

Perl is a high-level, general-purpose, interpreted, dynamic programming languages with over 25 years of development. Perl 5 runs on over 100 platforms from portables to mainframes and is suitable for both rapid prototyping and large-scale development projects.  Perl gained widespread popularity as a Common Gateway Interface (CGI) scripting language, in part due to its regular expression and string parsing abilities. In addition to CGI, Perl is used for graphics programming, system administration, network programming, finance, bioinformatics, and other applications.