searching for music treasure - right in your mp3 player

It might sound weird, but in fact, thats how I actually listen to my music sometimes. For a few times, I had accidentally reformatted or deleted music files in my mp3 player, and found myself panicking because I did not have any copy of the files anywhere, so I had to do data recovery on it. And to make things worst, prior to the data recovery, I copied some more music files onto it, making my effort to have a complete recovery futile. But i tried recovering it anyway, as I need to recover a long and important .wav recording from the player, and guess what, even though I've written fresh data on it, the recovery software still saw the 250mbytes REC023.wav file that I've lost, but it was listed in the lost chain and incomplete category, but I copied the whole raw data anyway. That's when the fun begins, I tried playing the .wav file, to my surprise, it did not play any recording at all, instead the whole .wav file contains all the mix of long lost mp3s which were still retaining in the flash memory, and since the files are all mp3, the recovery software actually copies the whole chain of lost mp3 together thinking that it is a one stream of .wav file. I always had the trance and house music in my mp3, and this process have somehow created a really random mix tape of it all, and actually, the random process itself have chosen some of my forgotten favourites, from Moonbeam, to Kyau & Albert, some of the bits and pieces of mp3 survived the formatting and deleting, and are together chained into the .wav file. So, instead of making a playlist, the recovery software did the whole thing for me, but sadly, not even one piece of the real .wav recording was recovered.

The same thing also happened on my Nokia, I have an 8Gbyte microsd card which is really messy, and contains everything from videos to pictures to apps to everything, and is always filled up. I have an app called symtorrent, which I used it to download torrent straight to my phone, and once I was downloading an album which consists of all mp3 files, and I hadn't yet download it completely just at around 40%, and I tried playing the broken torrent mp3s, and to my surprise, the player jumped all around the sd card playing random bits and pieces of mp3s in the card. Whenever it reads the incomplete mp3s, it somehow got addressed to other places in the sd card, and since the incomplete mp3 is actually overwriting my past mp3 collection which was deleted, it reads the raw deleted data whenever there is a hole in the incomplete mp3. And there I go, reminiscing the past mp3s, long forgotten, and now revived by the incomplete mp3s. I thought it should've have skipped the null data, instead, it reads the data (since it's also mp3).