Spaced Ranger said:

Worse coming to worst, play the file and record it with your system's sound recorder (save as a .wav file for no additional compression artifacts).

[emphasis mine]

.MP3 is a lossy (compressed) format, while .WAV is loseless (no compression). Compression artifacts, audio or video, are cumulative on each save -- something to avoid if ..

darth_ender said:

There are lines without background sound effects or soundtrack, so it could be useful for fan edits.