Mobile digital communication/computing device having a context sensitive audio system

1. One or more non-transitory computer-readable media containing instructions written thereon that, in response to execution on a mobile client device, cause the mobile client device to:

first provide a first audio signal at a first audio volume level to a user, the first audio volume level being selectable by the user;

while the first audio signal is provided to the user at the first audio volume level, provide a second audio signal at a second audio volume level to the user, the second audio volume level being variably controlled by the mobile client device based on said first audio volume level, the second audio volume level being non-intrusively lower than the first audio volume level initially; and

while the first and second audio signals are provided to the user, incrementally increase the second audio volume level from the initial non-intrusive lower volume level to a discernable volume level higher than the first audio volume level, wherein incrementally increase further comprises:

first, increase the second audio volume level by a first predetermined increment;

second, determine that the user has not responded to the second audio signal; and

third, increase the second audio volume level by a second predetermined increment, wherein the second predetermined increment is different than the first predetermined increment.

2. The non-transitory computer-readable media of claim 1 , wherein the first audio signal corresponds to music associated with output of at least one of an MP3 player and a radio included with the mobile client device.

3. The non-transitory computer-readable media of claim 1 , wherein provide the second audio signal comprises provide the second audio signal corresponding to an associated alert for at least a selected one from the group consisting of an incoming call, a received indication of a text message, a received indication of a voicemail message, a calendar alert, and a wireless mobile phone system utilities warning.

4. The non-transitory computer-readable media of claim 1 , wherein incrementally increase comprises incrementally increase the second audio volume level to a pre-determined audio volume level limit above which hearing damage is likely to occur.

5. The non-transitory computer-readable media of claim 1 , wherein incrementally increase comprises incrementally increase the second audio volume level by a selected one of a constant increment and an increasing increment.

6. The non-transitory computer-readable media of claim 1 , wherein the first audio volume level is measured as an audio power level.

7. The non-transitory computer-readable media of claim 6 , wherein the first audio volume level is measured as at least one of volts, watts, and decibels.

8. The non-transitory computer-readable media of claim 1 , wherein the instructions are further configured to cause the mobile client device to:

mix said first and second audio signals;

provide the first and second audio signals as a mixed signal; and

variably control the second audio volume level based at least in part on said mixed signal.

9. The non-transitory computer-readable media of claim 1 , wherein provide a second audio signal comprises generate a ring tone.

10. A mobile client device, comprising:

means for first providing a first audio signal at a first audio volume level to a user, the first audio volume level being selectable by the user;

means for, while the first audio signal is provided to the user at the first audio volume level, providing a second audio signal at a second audio volume level to the user, the second audio volume level being variably controlled by the mobile client device based on said first audio volume level, the second audio volume level being non-intrusively lower than the first audio volume level initially; and

means for, while the first and second audio signals are provided to the user, incrementally increasing, by an increasing increment, the second audio volume level from the initial non-intrusive lower volume level to a discernable volume level higher than the first audio volume level until the user responds to the second audio signal.

11. The mobile client device of claim 10 , wherein the first audio signal corresponds to music associated with output of at least one of an MP3 player and a radio included with the mobile client device.

12. The mobile client device of claim 10 , wherein means for providing the second audio signal comprises means for providing the second audio signal corresponding to an associated alert for at least a selected one from the group consisting of an incoming call, a received indication of a text message, a received indication of a voicemail message, a calendar alert, and a wireless mobile phone system utilities warning.

13. The mobile client device of claim 10 , wherein means for incrementally increasing comprises means for incrementally increasing the second audio volume level to a pre-determined audio volume level limit above which hearing damage is likely to occur.

14. The mobile client device of claim 10 , wherein means for incrementally increasing comprises means for incrementally increasing the second audio volume level by a selected one of a constant increment and an increasing increment.

15. The mobile client device of claim 10 , wherein the first audio volume level is measured as an audio power level.

16. The mobile client device of claim 15 , wherein the first audio volume level is measured as at least one of volts, watts, and decibels.

17. The mobile client device of claim 10 , further comprising:

means for mixing said first and second audio signals;

means for providing the first and second audio signals as a mixed signal; and

means for variably controlling the second audio volume level based at least in part on said mixed signal.

18. The mobile client device of claim 10 , wherein means for providing a second audio signal comprises means for generating a ring tone.