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J River Conversion Cache

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Matias:
I installed a new SSD, formatted everything and reinstalled Win 7 x64 and latest MC 15.
After reloading my 350GB library from my data HDD, I synched my iPod Classic 120GB.
It took the whole night converting flac to MP3 320kbps (I chose these settings).

The problem is, I just found out that my new installation has a "J River Conversion Cache" folder in my User/Music folder, and this has 18GB copies of my MP3 music in it!!

1) What is this folder? Why hasn't MC deleted it after the synch finished?

2) Is it really needed to write all this in my SSD? I wish my RAM was used instead (6GB) if needed and avoid writes on the SSD.

Thank you in advance.

joh:
When you convert from one format to another, MC has the option to save a copy in its conversion cache. You can either disable this cache, or point it to another disk (assuming you kept your HDD). Goto "Tools / Options / File Location". Click on the button the words "music cache" and choose your option.

Good luck! /Olle

Ps: the purpose of this cache is that many people use high quality formats on their pc's and then convert to a lower quality format for portable devices. In order not to have to reconvert the file every time you want to copy it to another device, the lower Q version  is cached.

Matias:
Thank you for the tip.  I disabled my cache here. :)

Frobozz:
If you've still got a mechanical HD attached you might consider putting the conversion cache on the mechanical HD.  Otherwise the next time you sync your iPod with those same songs it would take all night to do the conversion and sync again.  If the files are in the conversion cache there is no need to convert them again during the sync and that saves a lot of time.

I've got an 80 GB iPod.  If every file on it needed to be converted the sync would take way more than just overnight.  I take advantage of the conversion cache so my syncs can be done in a reasonable amount of time.

Matias:
But even if I did not change my original flac files (Last Date Modified unchanged), it will still convert to MP3 and synch?
That is no good.

It should be:
1) Check if flacs changed
2) If yes, convert to MP3
3) If caching is enabled (for other devices), store in HD
4) Copy files to iPod

That should be the reasonable way of synching.
Why would MC check the changes based on the cached MP3?

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