I am new to perl. I have to write a script that will: 
1. get the filesize of an mp3 file in bytes (ls -l -R)
2. multiply the field in bytes by 8 to get bits
3. divide the results by 128000 (128kbs/sec) to get playtime in seconds
4. get the playtime in seconds and convert is to minutes (/60)
5. convert the decimal minutes to MM:SS
6. will produce an output of: "songname sizeinM time in MM:SS" recursively 
possibly to a file.
This is what I have done using awk. (I'm new to this too) 
ls -l | awk '{print $5,(($5*8)/128000)/60}' | awk -F\. '{print $1, $2*
+(60/100)}'

[download]
You help is truly appreciated. Thank you.

In reply to playtime calculation by Anonymous Monk

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