A three-minute song doesn't sound like much until you count every stem that goes into it drums, bass, multiple vocal takes, backing instruments, each as an uncompressed WAV. A single mix session can easily hit a few gigabytes before it ever reaches a mastering engineer. Add a weekly podcast with multitrack recordings for every guest, and you've got a real file-moving problem that MP3-era habits don't solve anymore.
Why "just export an MP3" stops working
Compressed formats are fine for a finished track going out to listeners, but anyone actually working on the audio a mix engineer, a mastering engineer, a co-producer needs the uncompressed source. A compressed file has already thrown away the detail a mastering chain needs to work with, so sending an MP3 "to save space" usually just means someone has to ask you to resend the real file anyway. The fix isn't a smaller format, it's a transfer method that doesn't choke on the real one.
Stems and multitrack sessions
A full stem export every track bounced individually, often 10-30+ files for one song needs to travel as a set, not as individual attachments where one email thread trails off and someone's missing the hi-hat track. Zipping the full session and sending it as one link keeps the whole package together and keeps file count out of the equation. The same applies to full multitrack podcast sessions: each guest's isolated track, bounced separately for a producer to balance later, adds up fast across an hour-long episode.
Round-tripping with a mastering engineer
Mastering is inherently back-and-forth: you send a mix, get a mastered version back, maybe request a revision. Every round of that needs to move a full-quality WAV or AIFF in both directions, and most engineers work with clients they've never met in person which means the file needs to arrive cleanly on the first try, with no re-encoding or quality loss introduced by whatever tool carried it there.
Podcast production handoffs
A typical episode workflow passes through several hands host records raw audio, sends it to an editor, the editor sends back a cut for approval, then it goes to whoever handles final distribution. Each of those handoffs is a large uncompressed file, and if even one link in that chain uses a lossy format or a size-capped tool, audio quality degrades a little more at every step. Keeping every handoff in the original format, moved as a direct link rather than funneled through a messaging app's auto-compression, protects quality end to end.
What to look for in a transfer tool
- No recompression. The file that arrives should be byte-identical to the one you sent not run through a messaging app's automatic audio compression.
- Room for a full stem package. Dozens of WAV stems zipped together shouldn't need splitting across multiple uploads.
- No account needed for collaborators. A guest vocalist or a one-off mastering engineer shouldn't have to sign up just to grab a file once.
- A link that works the same for a demo and a final master so you're not learning a different tool depending on how far along the project is.
On Letshareit, a full stem package or a multitrack session goes out as one link, exactly as uploaded, with no account required for whoever's on the other end. For the heavier sessions a full album's stems, or a season's worth of raw podcast audio paid plans raise the per-file ceiling well past what a single song ever needs.
