I'm not an itunes expert, but I would consider the following approach:
1) Temporarily change the location of your music files to the location you want to keep the lossless files in.
2) Temporarily et itunes ripping format to lossless
3) In the "advanced" menu, select the option to save as lossless to create lossless versions of your songs.
4) Now remove all the lossless songs you just created from your library. Do not delete them from their location, just remove them from the library. Change your settings back to how they were. Now your original settings and library are unchanged from how they were, but you've created a repository of lossless files.
5) Google this one, or use itunes help. When starting itunes, there are keys to depress that allows you to choose opening itunes with a different library or a new library. Open itunes with a new library.
6) Set up itunes with its new library to the location of the lossless files. Switch off "copy files into itunes music folder" option.
7) Import all your lossless songs into this new library. Now you have two libaries, properly populated with the song/formats you want.
Hope that helps. Maybe someone else can confirm this approach. In the future, as you add new music, you'll follow a similar procedure in creating the lossless files out of your original library, but a slightly different importing procedure.
Have you determined that a higher resolution compressed format won't fit the bill for your portable playing? You could save more space that way???
1) Temporarily change the location of your music files to the location you want to keep the lossless files in.
2) Temporarily et itunes ripping format to lossless
3) In the "advanced" menu, select the option to save as lossless to create lossless versions of your songs.
4) Now remove all the lossless songs you just created from your library. Do not delete them from their location, just remove them from the library. Change your settings back to how they were. Now your original settings and library are unchanged from how they were, but you've created a repository of lossless files.
5) Google this one, or use itunes help. When starting itunes, there are keys to depress that allows you to choose opening itunes with a different library or a new library. Open itunes with a new library.
6) Set up itunes with its new library to the location of the lossless files. Switch off "copy files into itunes music folder" option.
7) Import all your lossless songs into this new library. Now you have two libaries, properly populated with the song/formats you want.
Hope that helps. Maybe someone else can confirm this approach. In the future, as you add new music, you'll follow a similar procedure in creating the lossless files out of your original library, but a slightly different importing procedure.
Have you determined that a higher resolution compressed format won't fit the bill for your portable playing? You could save more space that way???