OK.....<br><br>Friend sends rough mix of drums and bass in mp3 form.<br><br>Tells me to record new guitars to this.....(he expects a wav file in return).<br><br>This &quot;master in mp3 form&quot; makes me a bit nervous.  Why?<br>

<br>Because I don&#39;t know enough about the mp3 encoding process.........<br><br>Is it &quot;lossy&quot; simply because it rounds-off stuff?  <br><br>Or does it actually drop samples (like various lossy video encoders?)<br>

<br>If so, the wav file that I send him could get weird sample-wise when he imports it into the &quot;real&quot; session, no?<br><br>Am I picking nits here?<br><br><br><br><br>