Exhibit 31.2



CERTIFICATION



I, John Walpuck, certify that:



|1. |  | I have reviewed this Quarterly Report on Form 10-Q for the quarter ended June 30,
2012 of AllDigital Holdings, Inc.;
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|2. |  | Based on my knowledge, this report does not contain any untrue statement of a material
fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements
were made, not misleading with respect to the period covered by this report;
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|3. |  | Based on my knowledge, the financial statements, and other financial information included
in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant
as of, and for, the periods presented in this report;
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|4. |  | The registrant’s other certifying officer(s) and I are responsible for establishing
and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control
over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:
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(a) Designed such disclosure controls
and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material
information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities,
particularly during the period in which this report is being prepared;



(b) Designed such internal control
over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide
reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external
purposes in accordance with generally accepted accounting principles;



(c) Evaluated the effectiveness of
the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness
of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and



(d) Disclosed in this report any
change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent
fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or
is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and



|5. |  | The registrant’s other certifying officer(s) and I have disclosed, based on
our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee
of the registrant’s board of directors (or persons performing the equivalent functions):
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(a) All significant deficiencies
and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to
adversely affect the registrant’s ability to record, process, summarize and report financial information; and



(b) Any fraud, whether or not material,
that involves management or other employees who have a significant role in the registrant’s internal control over financial
reporting.



|Dated: August 14, 2012 | /s/ John
    Walpuck       
|---------------------- | ---------------------------
|                       | John Walpuck               
|                       | Chief Operating Officer and
|                       | Chief Financial Officer