I recorded a 13 minute 9 track audio file, yesterday. It’s probably ten or more gigabytes in size. My Pi is connected to my laptop with an ethernet cable and I can see the file in my web browser but it won’t download, neither will it play on Zynthian. Neither will Zynthian show or play any other audio files (presumably being jammed up with this monster as the last recorded). I have successfully (in part) converted it to OGG and can it play it in the web browser but it seems to have only converted a single track (Admittedly, I don’t even know if there is such a thing as a multitrack OGG file). There are two fairly drastic options that I can think of - both of which I’d like to avoid. One would be to take my Zynthian machine apart and try reading the file directly from the SD card but that’s more effort than it’s worth - with my pi built into a case behind a touch screen. The other would be to delete the super-massive file (Obviously I haven’t tried this yet - and am only assuming this would work). I have also tried backing up the entire Zynthian and looking at the files in the backup zip file. Perhaps this will work if I give the process more time but the web page disappearing with a ‘timed out’ error is a bit off-putting. Having said that - the OGG conversion did the same thing and that worked. Perhaps I’ll try it again and let it rumble on for an hour or so and see what happens. Sorry to have let you read all of this and said so little of interest seeing as I am not optimistic that there is anything else that can be done - but if there is - I’d love to know! Thank you! Ben.
It has just occurred to me, that next time I try this I should plug in a USB stick!
Ok so the OGG file was only fifty megabytes and contained all EIGHTEEN (nine stereo) tracks - as confirmed when I opened it in Audacity. Brilliant! As far as I can tell it’s all there and in excellent condition. 
Via a network connection on your PC you can try using FileZilla with SFTP / SSH FIle transfer to/from Zynthian .
My approach would be to try these options:
- Transfer file over network, e.g.
scp. - Transfer file to a USB stick using command line
cp. - Re-write webconf source code to allow it to transfer large files without timeout.
Obviously the first two are more appealing! If you are happy with the off version then good but I would always prefer the linear audio for post production.
Yes, we always record stereo tracks. I might add a feature request to offer mono track recording, maybe following the chain’s mono flag.
Ooh, yes, the cp thing…
Thanks, I haven’t used FileZilla before. I have transferred the OGG file and deleted the WAV file on the Zynthian - which, as far as I have looked, has returned everything back to normal. I will bear FileZilla in mind for next time.
You may also want to raise an issue via the “Report Issue” button in webconf describing how zynsampler becomes unresponsive when there is a large audio file and that you can’t download such a large audio file. These are bugs that should be fixed.
FileZilla is really cool ! It’s a must have 