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My pc companion recognizes the arc s, but it doesnt allow me to add/delete music
I switched to mass storage, and it allowed me to add my new songs...around 500mb of mp3 files
I then went to my arc s , and the music wasnt there, except for the default songs.
This has happened on both of my computerss, where i tried to transfer music
Why is my music not showing????
Also, from PC, i cannot delete pictures and also add
Please help me on this one, as i mainly use my phone for music :$
Oh, my memory card still has space remaining....so it isnt full
I'm not going to comment on the legal/illegal aspect on how you got them.
I would suggest you change the format, on your computer use formatfactory (its free) and even if you think or they are mp3 change them to mp3.
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well in my country, there are no laws pertaining to illegel downloading of music
#3rd world 
i took an orignial windows sample mp3 file, 'ninja tuna' , and it did not even appear .....
where are you trasnfering the music to? (where in the SD card)
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im pasting it in the phone card(G): music (folder)
it contains the default songs within them, which works fine btw
how about if you repair your phone with SUS
Update Service (SUS)
http://www.sonymobile.com/gb/tools/update-service/
http://www-support-downloads.sonymobile.com/Software
%20Downloads/Update_Service_Setup-2.11.12.5.exe
Alternatives on How to backup Xperias
http://talk.sonymobile.com/thread/36355
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