Don't even consider 11k, it isn' t an option. Because of the contrast between the quality levels, people notice. If you don't play music off anything other than the computer people will not be able to tell the difference. Compression Formats You can store approximately 200 minutes of music in 1 GB of hard drive space when your standard is 16 bit, 44k, mono recordings. Since it is to be played on demand, it needs to be decompressed and played at real time.
Speakers range about the same quality range.
Since the computer is a digital to analog music source, the sound reproduction is always at a standard. Like a CD player, the cleaner digital source allows the amplifier to be turned louder without generating as much distortion. The risk, however, is the quality of the original source music. If you record an awful sounding tape into the computer, the music replayed will be an exact reproduction of the tape. If the recording contains static, distortion, or clipping, the computer will always reproduce it perfectly.