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I need an audio professional to switch the voice and music of a 14-hour MP3 audio book. The final output should have the voice and music tracks merged. Key Requirements: - Experience with audio editing - Proficiency in handling MP3 format - Ability to merge tracks seamlessly Please provide samples of previous work.
Project ID: 40681769
33 proposals
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Active 3 days ago
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33 freelancers are bidding on average $135 USD for this job

Hello, I can help you switch the voice and music in your 14-hour audiobook. My plan is to carefully edit each section, ensuring the new voice and music blend well together. This approach worked for a previous client who had a similar project, and they were really happy with how natural the final mix sounded. I’ll take the time to get it right, so the flow feels smooth and engaging. What specific style or tone do you want for the new voice? Also, do you have a particular genre of music in mind that fits the content? Ramandeep K.
$177 USD in 4 days
6.1
6.1

Hello, I’d be happy to handle the voice and music switching for your 14-hour audiobook with clean, seamless results. With 5+ years of audio editing experience, I can manage the full MP3 workflow carefully and consistently. • Voice & music track replacement/switching • Seamless merging and transitions • Volume balancing and audio cleanup • Consistent levels across the full audiobook • Final MP3 export optimized for playback • 6–8 rounds of revisions I’m committed to delivering a professional, natural-sounding final mix with clear communication and on-time delivery. Best regards, Creative Studio
$50 USD in 1 day
6.1
6.1

I can handle the voice and music replacement across your 14-hour audiobook while keeping the final result clean and consistent from start to finish. I’m an Audio Engineer experienced in long-form audio editing, mixing, and MP3 processing. I’ll replace the existing voice and music, balance both elements properly, and deliver the final merged audiobook ready for use. You can check my profile for relevant audio editing and mixing work. Send me a message and we can get started right away
$225 USD in 2 days
5.7
5.7

Hi Im Gabriel a recording mixing and mastering engineer with more than 20 years of experience. I have experience on audio postproduction for podcasts film and other media. What you exactly need Is mixing of the voice and music of the 14 hour Audiobook right ?. Please check my reviews and portfolio for some of my works. Looking forward to working with you Regards
$250 USD in 10 days
5.5
5.5

Hi, I can handle the complete voice and music replacement for your 14-hour audiobook. I’m experienced in professional audio editing, audiobook production, and seamless voice/music mixing, and I can ensure the new elements are cleanly synchronized and balanced throughout the entire project. I’ll carefully process the audiobook, replace the existing voice and music, and deliver the final MP3 with both tracks professionally merged while maintaining consistent quality from beginning to end. I can also provide samples of my previous audio and audiobook work. I’m ready to get started once you provide the files and new voice/music.
$220 USD in 3 days
5.4
5.4

Hello! I am thrilled about the opportunity to work on your audio book voice-music switch project. With a passion for audio editing and a keen eye for detail, I am confident in my ability to seamlessly merge the voice and music tracks to create a cohesive final output. Having worked on similar projects in the past, I have honed my skills in audio editing and am proficient in handling MP3 formats. I will ensure that the final product meets your expectations and exceeds them. I would love to share samples of my previous work with you to showcase my capabilities. Thank you for considering my proposal, and I look forward to the possibility of collaborating on this project with you.
$50 USD in 1 day
4.4
4.4

Hi, I can professionally **replace and mix the voice and music throughout your 14-hour audiobook**, ensuring everything is properly synchronized and seamlessly merged. I have **10+ years of professional audio editing, mixing, and mastering experience** and can efficiently handle long-form MP3 projects while maintaining consistent volume, clarity, and quality from beginning to end. I’ll deliver a **clean, properly balanced final audiobook** with the voice and music seamlessly combined. I’m ready to start immediately. **Regards, Jamil Ahmed**
$250 USD in 2 days
4.3
4.3

Seamless transitions between voice and background score define the difference between a good audiobook and a truly immersive listening experience. As an audio engineer and post-production specialist with extensive experience mastering spoken-word projects to strict ACX/audible standards, I will ensure your voice-to-music transitions are smooth, dynamic, and emotionally aligned with the narrative. Here is how I will handle your project: Precise Automation & Ducking: Clean crossfades and sidechain compression so the music swells during pauses and recedes transparently beneath the narration without distracting volume jumps. Tonal Balancing & EQ: Carving out dedicated frequency pockets for the voice to keep dialogue crisp and intelligible over the instrumentation. Pacing & Flow: Aligning musical cues with narrative beats and chapter transitions for maximum dramatic impact. Industry Mastering: Consistent loudness levels (-18dB to -23dB RMS, below -3dB peak) with zero background noise or phase issues. Send over a sample chapter and your vision for the score. I’ll gladly provide a short demonstration edit so you can hear the quality firsthand. Looking forward to bringing your audiobook to life!
$60 USD in 2 days
4.0
4.0

As an experienced audio professional, I have worked on numerous projects similar to your audio book voice-music switch. My strong command over audio editing tools allows me to handle MP3 format with utmost ease - a key requirement for this project. I assure you a seamless merging of the voice and music tracks, resulting in a flawless final output. In addition to my audio production skills, my versatility in offering various visual content services can also be beneficial for your project. Although not mentioned in the key requirements, having polished 3D animated videos, studio quality commercials and graphics designs intertwined with audio gives a uniquely captivating experience to any content. So why settle for just the audio switch when we can take it up a notch with an engaging visual twist? To assure you of my skills and competency in delivering top-notch work, I would be more than happy to share samples of my previous works. It is very important for me to make your project successful. Together, let's merge our unique skills and create an outstanding audio-visual experience from your audio book. Looking forward to collaborating with you!
$150 USD in 7 days
3.6
3.6

Hi, I just read through the description and I’d be happy to handle this project. I have strong experience with audio editing, MP3 processing, voice/music balancing, and seamless track merging. I can switch the voice and music while maintaining clean transitions, consistent volume, and professional audio quality throughout the 14-hour audiobook. I have a studio and everything needed is ready to begin the task. I’m detail-oriented and can deliver the final merged MP3 files exactly as required. I’m ready to get started. Looking forward to working with you.
$150 USD in 1 day
2.9
2.9

Hi there, I read your project description for switching and merging the voice and music tracks for your 14-hour audiobook, and I would love to help you with this. As an audio engineer, I have extensive experience in audio editing, track separation/replacement, and seamless mixing. Handling large-scale MP3 projects while maintaining high audio quality and smooth transitions is right up my alley. Feel free to send over a short sample of your audio files—I'd be happy to create a quick test edit for you so you can assess the quality of my work firsthand before moving forward. I look forward to discussing the details with you! Best regards, Wahyu
$250 USD in 7 days
3.1
3.1

Dear, I am an audio expert. My specific area of expertise is in audio editing & music production. I am working in this field for more than 15 years. Some of my key skills are: Audio editing Audio mixing, mastering Audio restoration Audio enhance/correction Music recording & composition I will provide you the finest quality audio in very short time.
$100 USD in 7 days
2.6
2.6

Hello, I can help with the editing and restructuring of your 14-hour audiobook, combining the voice and music seamlessly according to your required sequence. I have experience working with long-form audio and audiobook production, including editing, cleaning, level balancing and maintaining consistency throughout extended projects. For a project of this length, I would first establish the exact voice/music switching pattern and processing workflow, then apply it consistently across the complete audiobook. I’ll make sure transitions are smooth and that the voice remains clear and properly balanced against the music. I can work directly with your MP3 files and deliver the final merged audio in the format you require. Before starting, I would just need to confirm how you want the voice and music to alternate and whether the source voice and music segments are already separated. I’m available to start immediately. Best regards, Rodrigo
$140 USD in 3 days
2.3
2.3

Hello, I have reviewed your posting. I understand you need an audio professional to replace the existing voice and music in a 14-hour MP3 audiobook and deliver a clean, seamlessly merged final audio file. I am an audio editor with extensive experience in audio production, sound design, mixing, mastering, and long-form audio projects. I work with professional audio editing tools to replace narration tracks, synchronize background music, balance levels, remove unwanted noise, and ensure smooth transitions throughout lengthy recordings. For your project, I can carefully integrate the new voice and music tracks, maintain consistent audio quality across the entire audiobook, and provide a polished final MP3 optimized for clear listening. My focus is on delivering natural-sounding results with seamless track blending and professional mastering standards. Please let me know if my profile interests you; we can schedule a time to discuss. Thank you, Tanya G.
$30 USD in 2 days
1.5
1.5

Hi, I am a music producer and sound engineer with extensive experience in professional audio restoration, editing, mixing, mastering, and production. Mixing your audiobook blending the background music with the voiceover while adhering to industry standards and maintaining high audio quality would be a straightforward task for me. Please get in touch. Best regards,
$100 USD in 3 days
1.3
1.3

Hi, I can edit and process your 14-hour audiobook, replace the existing voice and music, and merge the new tracks seamlessly while maintaining consistent volume, clarity, pacing, and overall audio quality throughout. Before confirming the price and delivery time, I would need to know whether the replacement narration and music will be provided as separate files, and whether the audiobook is divided into chapters. I can first process a short sample so you can evaluate the result. Best, Pouya
$140 USD in 4 days
1.2
1.2

With me, your 14-hour MP3 audio book is in experienced and capable hands. As an Audio Engineer and Music Producer with a solid grip on the MP3 format, I am skilled and equipped to split the voice and music tracks seamlessly before merging them back together flawlessly. As proof of my abilities, I’ve successfully handled complex audio projects in the past which required careful editing and precise handling. Beyond just technical proficiency, I have a deep understanding of audio's power to evoke emotions and immerse listeners. I'll ensure your audio book maintains its original essence while delivering a more engaging experience. My extensive background in music production makes me adept at achieving the perfect balance between voice and music that will keep your audiences captivated throughout the 14 hours. In all that I do, whether it be for artists, podcasters, or even brands like yours, my focus is on amplifying creative visions with professional quality output. Let's collaborate to give your project a sound that's both powerful and pleasing to the ears. Join me as we turn existing potential into an exceptional reality!
$70 USD in 2 days
0.7
0.7

I DON'T COMPETE ON PRICE. I COMPETE ON RESULTS. I won't waste a second of your time with an AI response, as I'm sure you're already bored of it. So lets talk with facts, actions and implementation. We can help you achieve a seamless and professional final product that enhances the listening experience. Your project requires a clean and professional merge of voice and music tracks, ensuring a polished output for your audio book. With extensive experience in audio editing and proficiency in MP3 formats, I specialize in merging tracks seamlessly to create the desired sound. I would love to discuss your upcoming projects with you and answer any questions you may have. Kind Regards, Stacey
$100 USD in 14 days
0.0
0.0

Hi, I can help you professionally replace the voice and music throughout your 14-hour MP3 audiobook and deliver a clean, seamless final mix. I have experience with audio editing, MP3 processing, track synchronization, volume balancing, and merging voice and music without noticeable transitions or quality loss. I’ll ensure the entire audiobook is consistently edited and properly exported in the required format. I can also provide relevant samples of my previous audio-editing work. I’m ready to get started and can complete the project efficiently while maintaining high audio quality. Best regards
$200 USD in 2 days
0.0
0.0

Your 14-hour audiobook requires careful voice and music replacement, synchronization, and seamless mixing to maintain a professional listening experience. I’ll handle the complete audio editing process, including track switching, precise synchronization, volume balancing, smooth transitions, and final mastering, then deliver the completed audiobook as high-quality merged MP3 audio. I have experience with professional audio editing and mixing and can complete the project within 3 days with thorough quality control. I’ll ensure the final result is clean, well-balanced, seamlessly synchronized, and professionally mastered, with consistent quality throughout the full 14-hour audiobook.
$120 USD in 3 days
0.0
0.0

Boca Raton, United States
Member since Aug 31, 2026
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