Merging mp3 files and progblems found

This is a PC based question  (with solution found after very time consuming persistence  )

I m doing a music mix for a radio program by joining music/songs and very short song identification

The structure of this misx is made this way (I think very typical ) 

XX-  title identification
XX-  song
That iterates as far as necessary for the 30 or 50 minute program

I use two programs mainly MP Surgeon and Mp Trackmaker for joining the produced files and Total recorder for recording my voice  via various head- and ear-phones but… 

…If the files have different sampling rates (44 vs 48kHz ) only the first file can be heard . for example the song ID is heard but not the song that follows. The program continues to play without anything can be heard!  

Example: that happened before knowing the problem of the wrong sampling rates. Most music mp3 files were set  at 48kHz while my voice recorders were set  by default on 44 kHZ . The joining result was totally disappointed and littered to the bin of my laptop . I found this mismatch after analyzing the files with my Xrecode converter 

 

….If the files have different bit  rates the result is OK and plays well . Sometimes the standard players (as Windows player ) can show the first file’s time length even if the series of songs is smoothly played. Thie same can happen in putlockers  

For example the last days  I have joined two songs for a total length of 8.45 minutes . The Windows player shown only the 4.45 minutes ie the length of the first song but after the song was finished it continued to play with the second song showing the real time,  

 

…special notice. Because this program is aired via AM mode ie in mediumwave or shortwave getting lower in terms of bit rates does not show any significant differences in the final reception. Signal fading also affects  badly in that as any interference and noise into the  reception result

…the last and difficult problem was with pulockers as box and Dropbox  and happens with the bitrate  anomalies. A few resulted files  were partially downloadable after uploaded to Box or Dropbox. The problem lies into an abrupt stopping of lockers  player. Anymore tries stopped in exact the same time point

An example: My #23 file was uploaded smoothly . Both started played that OK from the start until the 19.20 minute out of the requested 27.50 length. That happened  many times again. Downloading the  file in recipients computer  resulted  in abrupt stop in nearly the same time point.  

The best solution was to zip the file so that the producer can download it in full and play in his computer . There is still some unnecessary time for him to unzip and use it. As a 35 yr PC user  ma quit fast in  doing such things but I m unsure if the other is so fast as I …

This is the most significant problem happened. Even  with everything being OK and well heard in my computer still stops in lockers player with surely abrupt  stop of downloading …

 

…. Another reason to be KISS is not to use my external mp3 recorder . This process is quite time consuming: Using buttons as many times as required  to record all 3 second or less song ID files then remove the DSD card add adaptor, put into the laptop, wait till explorer starts then move the files into the PC then number them etc and move the DSD card back to the recorder It has been used well past times and buttons sometime do not respond properly

…another reason is NOT to use audacity or any other sound processing program.. I could use them only if some sound effects are necessary or cut and copy works  - mixing or editing songs are required  

For example  I did  that when mixing a original Greek song with its hindi version or when tested mixing two songs with voiceovers in between.This is surely something a bit complex but with sure results and s a sure reason to use this program !

 

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Finally I have found the solution using a more complex but also very simple in the end solution for the mixing product.  Xrecode III has a nice option of merging audio files. I have recently used that by chance which  later have been updated a bit with the following process and can be used directly with the original files to keep the highest fidelity possible before transcoding :

 

(a)Set output format into Mp3 and set output settings into :

(a1)Channels set to mono so that all can be set mono
(a2)output audio with sample rate set to auto or full 48000
(a3)max sample rate  into [not used ] -quality high
(a4) dynamic range compression  yes /no

(B) Action : merge /cue with mo3 unchecked  and cue file off

All this above has been saved into a profile that memorizes everything above.  

 

Finally

 

As for the low bit rate MP3 from Fraunhofer  . I have not any other choice except using total recorder as file converter by just opening and re-saving it

A serious reason is that the only second way is to use the old dbpoweramp into 32kbit abd pay around 85 Eu for a lot of other options that seem not wall operating so well