have an .MP3 file. I was wondering, if I convert it back to .wav, can I get the ORIGINAL .wav recording back? And I don’t have the original .wav recording. The reason why I’m asking this is, although when MP3 is converted to .wav, the file size increases, but can we get back the data that is chopped off in MP3 compression (from the original .wav)??
I need to convert my MP3 file to a lossless file format.

because mp3 is a perceptual codec (it is not lossless) converting back to .wav will not bring the audio back yo the way it was originally.
you can use creative meadia converter
download the ringtone convertor
Once a file is compressed into a new format parts of it are discarded. The best digital audio is .cda which is uncompressed audio put on an original CD. Convert that to MP3 and a 10 megabyte per minute audio file becomes a 1 megabyte file per minute file. So you can see a lot is lost, but the human ear is not a good sound resolver so the lost frequencies do not change the music very much. A CD can hold perhaps 25 songs, a MP3 CD can hold up to 300 songs. The Apple IPod uses MP3 and is the favorite of millions of music lovers.
yah… creative is the best way to go… but i think that windows media will do the converting for you… the quality will be the same as a mp3 though… mp3 gets rid of the sounds that people cant here… than compresses the file… its like writing a sentence and making all the words misspelt to make it shouter:
this is a sample to explain the process of compression
tis is a sampl to expln the proces of cmpresion
see how the second takes less space than the first… but it makes it sound a litter worse than normal… so converting to lossless wont make any difference… besides making the file bigger… compression doesnt lower the quality…