Can't install audacity because of cordova and nodejs?

问题

At first I just wanted to install audacity on my ubunut14.04:

sudo add-apt-repository ppa:ubuntuhandbook1/audacity

After that:

sudo apt-get update

I then got a few error messages:

W: GPG error: https://dl.bintray.com Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 99E82A75642AC823 W: Failed to fetch cdrom://Ubuntu 14.04.1 LTS Trusty Tahr - Release amd64 (20140722.2)/dists/trusty/main/binary-amd64/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs

W: Failed to fetch cdrom://Ubuntu 14.04.1 LTS Trusty Tahr - Release amd64 (20140722.2)/dists/trusty/restricted/binary-amd64/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs

W: Failed to fetch cdrom://Ubuntu 14.04.1 LTS Trusty Tahr - Release amd64 (20140722.2)/dists/trusty/main/binary-i386/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs

W: Failed to fetch cdrom://Ubuntu 14.04.1 LTS Trusty Tahr - Release amd64 (20140722.2)/dists/trusty/restricted/binary-i386/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs

W: Failed to fetch http://ppa.launchpad.net/dajhorn/skype-call-recorder/ubuntu/dists/trusty/main/binary-amd64/Packages 404 Not Found

W: Failed to fetch http://ppa.launchpad.net/dajhorn/skype-call-recorder/ubuntu/dists/trusty/main/binary-i386/Packages 404 Not Found

E: Some index files failed to download. They have been ignored, or old ones used instead.

I ignored them at first and continued:

sudo apt-get install audacity

Then I got this message:

You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: audacity : Depends: audacity-data (= 2.1.2-1~14.04) but it is not going to be installed Depends: libflac++6 (>= 1.3.0) but it is not going to be installed Depends: libid3tag0 (>= 0.15.1b) but it is not going to be installed Depends: liblilv-0-0 (>= 0.16.0~dfsg0) but it is not going to be installed Depends: libportsmf0 but it is not going to be installed Depends: libsbsms10 but it is not going to be installed Depends: libsoxr0 (>= 0.1.0) but it is not going to be installed Depends: libsuil-0-0 but it is not going to be installed Depends: libvamp-hostsdk3 but it is not going to be installed Depends: libwxbase3.0-0 (>= 3.0.2) but it is not going to be installed Depends: libwxgtk3.0-0 (>= 3.0.2) but it is not going to be installed cordova-cli : Depends: nodejs-legacy but it is not going to be installed E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).

Following the suggestion in the message I ran:

sudo apt-get -f install

I then got this message:

The following extra packages will be installed: nodejs-legacy The following NEW packages will be installed: nodejs-legacy 0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded. 41 not fully installed or removed. Need to get 0 B/14,6 kB of archives. After this operation, 122 kB of additional disk space will be used. Do you want to continue? [Y/n] (Reading database ... 908633 files and directories currently installed.) Preparing to unpack .../nodejs-legacy_0.10.25~dfsg2-2ubuntu1_all.deb ... Unpacking nodejs-legacy (0.10.25~dfsg2-2ubuntu1) ... dpkg: error processing archive /var/cache/apt/archives/nodejs-legacy_0.10.25~dfsg2-2ubuntu1_all.deb (--unpack): trying to overwrite '/usr/share/man/man1/node.1.gz', which is also in package nodejs 0.10.37-1chl1~trusty1 Processing triggers for man-db (2.6.7.1-1ubuntu1) ... Errors were encountered while processing: /var/cache/apt/archives/nodejs-legacy_0.10.25~dfsg2-2ubuntu1_all.deb E: Sub-process /usr/bin/dpkg returned an error code (1)

So it seems like there is something wrong with nodejs? Ok, I ran this:

sudo apt-get purge nodejs-legacy nodejs

I got this error message:

Package 'nodejs-legacy' is not installed, so not removed You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: cordova-cli : Depends: nodejs but it is not going to be installed Depends: nodejs-legacy but it is not going to be installed Depends: npm E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).

I ran the command apt-get -f install again and recieved the same error like the last time I ran that command. I also tried this:

sudo apt-get autoremove
sudo apt-get update
sudo apt-get upgrade
sudo apt-get dist-upgrade

..and I repeated the whole process again and again with always the same results.

I also can't install audacity via ubuntu's software center. It would say:

"New Software can't be installed, because there is a problem with the software currently installed."

..along with the option to "repair". I pressed on "repair". After that I still couldn't install audacity. It would mention that

To install audacity, these items must be removed: Cordova-cli

Ok, I uninstalled cordova-cli and tried to install audacity again (but I do need cordova. I think there has to be another way to use audacity and cordova cli at the same time...). Still not possible. It seems like I now can't install any new software or update my system. Help!